diff --git a/group/forms.py b/group/forms.py
index 19d0575bb2..546dfa89d4 100644
--- a/group/forms.py
+++ b/group/forms.py
@@ -3,8 +3,15 @@ import os
 from django import forms
 
 class MessageForm(forms.Form):
-    message = forms.CharField(max_length=500)
+    message = forms.CharField(max_length=5)
 
 class MessageReplyForm(forms.Form):
     message = forms.CharField(max_length=150)
 
+class FileRecommendForm(MessageForm):
+    """
+    A form used to recommend a file.
+    """
+    groups = forms.CharField()
+    repo_id = forms.CharField(max_length=40)
+    file_path = forms.CharField()
diff --git a/group/models.py b/group/models.py
index c6d2b13c7d..e927459ddb 100644
--- a/group/models.py
+++ b/group/models.py
@@ -23,6 +23,17 @@ class MessageReply(models.Model):
     message = models.CharField(max_length=150)
     timestamp = models.DateTimeField(default=datetime.datetime.now)
 
+class MessageAttachment(models.Model):
+    """
+    
+    """
+    group_message = models.ForeignKey(GroupMessage)
+    repo_id = models.CharField(max_length=40)
+    file_path = models.TextField()
+        
+
+
+    
 at_pattern = re.compile(r'(\s|^)(@\w+)', flags=re.U)
 
 @receiver(post_save, sender=MessageReply)
diff --git a/group/templates/group/group_info.html b/group/templates/group/group_info.html
index 904a346577..9963379565 100644
--- a/group/templates/group/group_info.html
+++ b/group/templates/group/group_info.html
@@ -102,7 +102,17 @@
                 <a href="{{ SITE_ROOT }}profile/{{ msg.from_email }}/" title="{{ msg.from_email }}">{{ msg.from_email|email2nickname }}</a>
             </div>
             <div class="msg-bd">
-                <p>{{ msg.message|linebreaksbr|seahub_urlize|find_at }}</p>
+                {% if msg.attachment %}
+                <span class="recommend">（推荐)</span>
+                {% endif %}
+                <p>
+                  {{ msg.message|linebreaksbr|seahub_urlize|find_at }}
+                </p>
+                {% if msg.attachment %}
+                <span>
+                  附件: <a href="{% url repo_view_file msg.attachment.repo_id %}?p={{ msg.attachment.file_path }}" target="_blank">查看</a>
+                </span>
+                {% endif %}                
                 {% if msg.reply_cnt == 0 %}
                 <a class="reply op" href="#" data="{{ msg.id }}">回复</a>
                 {% else %}
diff --git a/group/urls.py b/group/urls.py
index 5cece91865..8d1089831b 100644
--- a/group/urls.py
+++ b/group/urls.py
@@ -1,7 +1,7 @@
 from django.conf.urls.defaults import *
 
 from views import group_list, group_info, group_member_operations, \
-    group_members, msg_reply, msg_reply_new
+    group_members, msg_reply, msg_reply_new, group_recommend
 
 urlpatterns = patterns('',
     url(r'^(?P<group_id>[\d]+)/$', group_info, name='group_info'),
@@ -9,4 +9,5 @@ urlpatterns = patterns('',
     url(r'^reply/new/$', msg_reply_new, name='msg_reply_new'),
     url(r'^(?P<group_id>[\d]+)/members/$', group_members, name='group_members'),
     (r'^(?P<group_id>[\d]+)/member/(?P<user_name>[^/]+)/$', group_member_operations),
+    url(r'^recommend/$', group_recommend, name='group_recommend'),
 )
diff --git a/group/views.py b/group/views.py
index c6ee6a7c18..50bebcfb1a 100644
--- a/group/views.py
+++ b/group/views.py
@@ -1,6 +1,7 @@
 # encoding: utf-8
 import simplejson as json
 from django.core.urlresolvers import reverse
+from django.contrib import messages
 from django.http import HttpResponse, HttpResponseRedirect, Http404, \
     HttpResponseBadRequest
 from django.shortcuts import render_to_response, redirect
@@ -13,16 +14,17 @@ from seaserv import ccnet_rpc, ccnet_threaded_rpc, seafserv_threaded_rpc, \
     get_personal_groups, get_group, get_group_members
 from pysearpc import SearpcError
 
-from models import GroupMessage, MessageReply
-from forms import MessageForm, MessageReplyForm
+from models import GroupMessage, MessageReply, MessageAttachment
+from forms import MessageForm, MessageReplyForm, FileRecommendForm
 from signals import grpmsg_added, grpmsg_reply_added
 from seahub.contacts.models import Contact
 from seahub.contacts.signals import mail_sended
 from seahub.notifications.models import UserNotification
 from seahub.profile.models import Profile
 from seahub.settings import SITE_ROOT
+from seahub.shortcuts import get_first_object_or_none
 from seahub.utils import render_error, render_permission_error, \
-    validate_group_name, emails2list
+    validate_group_name, string2list
 from seahub.views import is_registered_user
 
 @login_required
@@ -209,7 +211,9 @@ def render_group_info(request, group_id, form):
     group_msgs = msgs_plus_one[:per_page]
     for msg in group_msgs:
         msg.reply_cnt = len(MessageReply.objects.filter(reply_to=msg))
-
+        msg.attachment = get_first_object_or_none(
+            MessageAttachment.objects.filter(group_message=msg))
+        
     return render_to_response("group/group_info.html", {
             "managers": managers,
             "common_members": common_members,
@@ -370,7 +374,7 @@ def group_members(request, group_id):
         """
         member_name_str = request.POST.get('user_name', '')
 
-        member_list = emails2list(member_name_str)
+        member_list = string2list(member_name_str)
 
         if request.user.org:
             for member_name in member_list:
@@ -489,3 +493,65 @@ def group_unshare_repo(request, repo_id, group_id, from_email):
         
     if seafserv_threaded_rpc.group_unshare_repo(repo_id, group_id, from_email) != 0:
         return render_error(request, u'共享失败:内部错误')
+
+@login_required
+def group_recommend(request):
+    """
+    Recommend a file to a group.
+    """
+    if request.method != 'POST':
+        raise Http404
+
+    next = request.META.get('HTTP_REFERER', None)
+    if not next:
+        next = SITE_ROOT
+    
+    form = FileRecommendForm(request.POST)
+    if form.is_valid():
+        groups = form.cleaned_data['groups']
+        repo_id = form.cleaned_data['repo_id']
+        file_path = form.cleaned_data['file_path']
+        message = form.cleaned_data['message']
+
+        group_list = string2list(groups)
+        for e in group_list:
+            group_name = e.split(' ')[0]
+            try:
+                group_creator = e.split(' ')[1]
+            except IndexError:
+                messages.add_message(request, messages.ERROR,
+                                     u'推荐到 %s 失败，请检查是否参加了该小组。' % \
+                                         group_name)
+                continue
+            
+            # get all the groups the user joined
+            groups = get_personal_groups(request.user.username)
+            find = False
+            for group in groups:
+                # for every group that user joined, if group name and
+                # group creator matchs, then has find the group
+                if group.group_name == group_name and \
+                        group_creator.find(group.creator_name) >= 0:
+                    find = True
+                    # save message to group
+                    gm = GroupMessage(group_id=int(group.id),
+                                      from_email=request.user.username,
+                                      message=message)
+                    gm.save()
+
+                    # save attachment
+                    ma = MessageAttachment(group_message=gm, repo_id=repo_id,
+                                           file_path=file_path)
+                    ma.save()
+        
+                    messages.add_message(request, messages.INFO,
+                                         u'推荐成功，请到该小组页面查看。')
+                    break
+            if not find:
+                messages.add_message(request, messages.ERROR,
+                                     u'推荐到 %s 失败，请检查是否参加了该小组。' % \
+                                         group_name)
+    else:
+        # TODO: need more clear error message
+        messages.add_message(request, messages.ERROR, '推荐失败')
+    return HttpResponseRedirect(next)                                     
diff --git a/media/css/seahub.css b/media/css/seahub.css
index 037857e13e..c730ad3da4 100644
--- a/media/css/seahub.css
+++ b/media/css/seahub.css
@@ -118,6 +118,7 @@ p {
 .w100 {
 	width: 100%;
 }
+.info,
 .notification {
     padding:5px;
     background:#FDF;
@@ -559,6 +560,10 @@ p {
 #recommend-msg {
     width:260px;
     height:80px;
+    display:block;
+}
+#groups {
+    width:260px;
 }
 /* group, org */
 .group-list {
@@ -690,6 +695,10 @@ p {
 .msg-bd .op:hover {
     text-decoration:none;
 }
+.msg-bd .recommend {
+    font-size:12px;
+    color: #880088;
+}
 .msg-bd p a {
     color: #666666;
     font-weight: normal;
diff --git a/organizations/views.py b/organizations/views.py
index e50c8af736..1dd7139c29 100644
--- a/organizations/views.py
+++ b/organizations/views.py
@@ -28,7 +28,7 @@ from seahub.contacts import Contact
 from seahub.forms import RepoCreateForm
 import seahub.settings as seahub_settings
 from seahub.utils import render_error, render_permission_error, gen_token, \
-    validate_group_name, emails2list, set_cur_ctx, calculate_repo_last_modify,\
+    validate_group_name, string2list, set_cur_ctx, calculate_repo_last_modify,\
     MAX_INT
 from seahub.views import myhome
 
@@ -155,7 +155,7 @@ def org_useradmin(request, url_prefix):
     if request.method == 'POST':
         emails = request.POST.get('added-member-name')
 
-        email_list = emails2list(emails)
+        email_list = string2list(emails)
         for email in email_list:
             if not email or email.find('@') <= 0 :
                 continue
diff --git a/settings.py b/settings.py
index cc22477f0b..4cac556b48 100644
--- a/settings.py
+++ b/settings.py
@@ -105,7 +105,7 @@ INSTALLED_APPS = (
 #    'django.contrib.admin',
     'django.contrib.messages',
     
-    'auth',
+    # 'auth',
     'avatar',    
     'registration',
 
diff --git a/share/views.py b/share/views.py
index 62cda0256f..05691b7c7d 100644
--- a/share/views.py
+++ b/share/views.py
@@ -11,7 +11,7 @@ from django.contrib import messages
 from django.contrib.sites.models import Site, RequestSite
 from pysearpc import SearpcError
 from seaserv import seafserv_threaded_rpc, get_repo, ccnet_rpc, \
-    ccnet_threaded_rpc
+    ccnet_threaded_rpc, get_personal_groups
 
 from forms import RepoShareForm
 from models import AnonymousShare
@@ -20,7 +20,7 @@ from tokens import anon_share_token_generator
 from seahub.contacts.signals import mail_sended
 from seahub.share.models import FileShare
 from seahub.views import validate_owner, is_registered_user
-from seahub.utils import render_permission_error, emails2list
+from seahub.utils import render_permission_error, string2list
 
 @login_required
 def share_repo(request):
@@ -43,7 +43,7 @@ def share_repo(request):
     if not validate_owner(request, repo_id):
         return render_permission_error(request, u'只有目录拥有者有权共享目录')
     
-    to_email_list = emails2list(email_or_group)
+    to_email_list = string2list(email_or_group)
     for to_email in to_email_list:
         # if to_email is user name, the format is: 'example@mail.com';
         # if to_email is group, the format is 'group_name <creator@mail.com>'
@@ -57,7 +57,7 @@ def share_repo(request):
             group_name = to_email.split(' ')[0]
             group_creator = to_email.split(' ')[1]
             # get all the groups the user joined
-            groups = ccnet_threaded_rpc.get_groups(request.user.username)
+            groups = get_personal_groups(request.user.username)
             find = False
             for group in groups:
                 # for every group that user joined, if group name and
diff --git a/templates/repo_view_file.html b/templates/repo_view_file.html
index c5fefee4a6..f48e137f61 100644
--- a/templates/repo_view_file.html
+++ b/templates/repo_view_file.html
@@ -11,6 +11,16 @@
 {% endif %}
 {% endblock %}
 
+{% block right_panel %}
+{% if messages %}
+<ul class="messages">
+  {% for message in messages %}
+  <li class="{{ message.tags }}">{{ message }}</li>
+  {% endfor %}
+</ul>
+{% endif %}
+{% endblock %}
+
 {% block main_panel %}
     <h2>
         {% if not view_history %}
@@ -68,17 +78,20 @@
         <p id="success" class="hide"></p> 
     </form>
 
-    <form action="" method="post" id="recommend-form" class="hide">
+    <form action="{% url group_recommend %}" method="post" id="recommend-form" class="hide">
         <p>推荐
-         {% for name, link in zipped %}
+        {% for name, link in zipped %}
             {% if not forloop.last %}
                {{ name }} /               
             {% else %}
                 {{ name }}
             {% endif %}
-        {% endfor %} :
+        {% endfor %} 到小组:
         </p>
-        <textarea name="recommend-msg" id="recommend-msg"></textarea><br />
+        <input type="input" name="groups" id="groups" value="" />
+        <textarea name="message" id="recommend-msg"></textarea><br />
+        <input type="hidden" name="repo_id" value="{{ repo.id }}" />
+        <input type="hidden" name="file_path" value="{{ path }}" />
         <input type="submit" class="submit" value="提交" />
         <button class="simplemodal-close">取消</button>
     </form>
@@ -195,6 +208,16 @@ $("#link-send-form").submit(function(event) {
    return false;
 });
 
+$(function() {
+    // recommend form autocomplete
+    var group_list = []
+    {% for group in groups %}
+        group_list.push('{{ group.props.group_name }} <{{ group.props.creator_name }}>');
+    {% endfor %}
+    addAutocomplete('#groups', '#recommend-form', group_list);
+    $('.ui-autocomplete').css({'max-height': window.innerHeight - $('.ui-autocomplete-input').offset().top - $('.ui-autocomplete-input').height() - 10, 'overflow': 'auto'});
+    
+});        
 {% include "snippets/bottom_bar.html" %}
 {% endif %}
 </script>
diff --git a/templates/snippets/bottom_bar.html b/templates/snippets/bottom_bar.html
index 6d6abfb81a..423d0d7805 100644
--- a/templates/snippets/bottom_bar.html
+++ b/templates/snippets/bottom_bar.html
@@ -1,4 +1,4 @@
-var Bottom_bar = '<div id="bottom-bar"><button id="recommend">推荐</button> <button id="recommend">发送到私信</button></div>';
+var Bottom_bar = '<div id="bottom-bar"><button id="recommend">推荐到小组</button> <button id="recommend">发送到私信</button></div>';
 $('#wrapper').append(Bottom_bar);
 $('#bottom-bar').css({'position':'fixed', 'bottom':0, 'left':$('#main').offset().left + $('#main').width() + 15});
 $('#recommend').click(function() {
diff --git a/utils.py b/utils.py
index 4fe2f589b5..c594e5ff74 100644
--- a/utils.py
+++ b/utils.py
@@ -297,14 +297,15 @@ def get_ccnet_server_addr_port():
     """get ccnet server host and port"""
     return CCNET_SERVER_ADDR, CCNET_SERVER_PORT
 
-def emails2list(emails):
+def string2list(string):
     """
-    Split email strings contacted with diffent separator.
+    Split strings contacted with diffent separator to a list, and remove
+    duplicated string.
     """
-    email_str = emails.replace(';', ',').replace('\n', ',').replace('\r', ',')
-    # Remove empty strings and duplicate emails
+    tmp_str = string.replace(';', ',').replace('\n', ',').replace('\r', ',')
+    # Remove empty and duplicate strings
     s = set()
-    for e in email_str.split(','):
+    for e in tmp_str.split(','):
         e = e.strip(' ')
         if not e:
             continue
diff --git a/views.py b/views.py
index 60b9ea9f77..776f93b459 100644
--- a/views.py
+++ b/views.py
@@ -48,7 +48,7 @@ from utils import render_permission_error, render_error, list_to_string, \
     calculate_repo_last_modify, valid_previewed_file, \
     check_filename_with_rename, get_accessible_repos, EMPTY_SHA1, \
     get_file_revision_id_size, get_ccnet_server_addr_port, \
-    gen_file_get_url, emails2list, set_cur_ctx, MAX_INT
+    gen_file_get_url, string2list, set_cur_ctx, MAX_INT
 from seahub.profile.models import Profile
 try:
     from settings import CROCODOC_API_TOKEN
@@ -822,6 +822,9 @@ def repo_view_file(request, repo_id):
 
     # my constacts
     contacts = Contact.objects.filter(user_email=request.user.username)
+
+    # my groups
+    groups = get_personal_groups(request.user.username)
     
     return render_to_response('repo_view_file.html', {
             'repo': repo,
@@ -843,6 +846,7 @@ def repo_view_file(request, repo_id):
             'contacts': contacts,
             'err': err,
             'file_content': file_content,
+            'groups': groups,
             }, context_instance=RequestContext(request))
 
 def repo_file_get(raw_path):
@@ -1582,7 +1586,7 @@ def repo_create(request):
         repo_name = form.cleaned_data['repo_name']
         repo_desc = form.cleaned_data['repo_desc']
         encrypted = form.cleaned_data['encryption']
-        passwd = form.cleaned_data['passwd']
+        passwd = form.cleasened_data['passwd']
         passwd_again = form.cleaned_data['passwd_again']
         user = request.user.username
         
@@ -1856,7 +1860,7 @@ def send_shared_link(request):
     file_shared_link = form.cleaned_data['file_shared_link']
 
     t = loader.get_template('shared_link_email.html')
-    to_email_list = emails2list(email)
+    to_email_list = string2list(email)
     for to_email in to_email_list:
         # Add email to contacts
         mail_sended.send(sender=None, user=request.user.username,