diff --git a/addons/website_forum/controllers/main.py b/addons/website_forum/controllers/main.py
index bce1e3a9515..7a8c9fc27cd 100644
--- a/addons/website_forum/controllers/main.py
+++ b/addons/website_forum/controllers/main.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 
+import werkzeug.exceptions
 import werkzeug.urls
 import werkzeug.wrappers
 import simplejson
@@ -239,6 +240,11 @@ class WebsiteForum(http.Controller):
     @http.route(['''/forum/<model("forum.forum"):forum>/question/<model("forum.post", "[('forum_id','=',forum[0]),('parent_id','=',False)]"):question>'''], type='http', auth="public", website=True)
     def question(self, forum, question, **post):
         cr, uid, context = request.cr, request.uid, request.context
+
+        # Hide posts from abusers (negative karma), except for moderators
+        if not question.can_view:
+            raise werkzeug.exceptions.NotFound()
+
         # increment view counter
         request.registry['forum.post'].set_viewed(cr, SUPERUSER_ID, [question.id], context=context)
 
diff --git a/addons/website_forum/models/forum.py b/addons/website_forum/models/forum.py
index 876517f2e3b..44a34438145 100644
--- a/addons/website_forum/models/forum.py
+++ b/addons/website_forum/models/forum.py
@@ -222,7 +222,7 @@ class Post(osv.Model):
     def _get_post_karma_rights(self, cr, uid, ids, field_name, arg, context=None):
         user = self.pool['res.users'].browse(cr, uid, uid, context=context)
         res = dict.fromkeys(ids, False)
-        for post in self.browse(cr, uid, ids, context=context):
+        for post in self.browse(cr, SUPERUSER_ID, ids, context=context):
             res[post.id] = {
                 'karma_ask': post.forum_id.karma_ask,
                 'karma_answer': post.forum_id.karma_answer,
@@ -246,6 +246,9 @@ class Post(osv.Model):
                 'can_downvote': uid == SUPERUSER_ID or user.karma >= res[post.id]['karma_downvote'],
                 'can_comment': uid == SUPERUSER_ID or user.karma >= res[post.id]['karma_comment'],
                 'can_comment_convert': uid == SUPERUSER_ID or user.karma >= res[post.id]['karma_comment_convert'],
+                'can_view': (uid == SUPERUSER_ID or
+                                user.karma >= res[post.id]['karma_close'] or
+                                    post.create_uid.karma > 0),
             })
         return res
 
@@ -335,6 +338,7 @@ class Post(osv.Model):
         'can_downvote': fields.function(_get_post_karma_rights, string='Can Downvote', type='boolean', multi='_get_post_karma_rights'),
         'can_comment': fields.function(_get_post_karma_rights, string='Can Comment', type='boolean', multi='_get_post_karma_rights'),
         'can_comment_convert': fields.function(_get_post_karma_rights, string='Can Convert to Comment', type='boolean', multi='_get_post_karma_rights'),
+        'can_view': fields.function(_get_post_karma_rights, string='Can View', type='boolean', multi='_get_post_karma_rights'),
     }
 
     _defaults = {