diff --git a/addons/website_forum/controllers/main.py b/addons/website_forum/controllers/main.py
index a17dc6bdbc1..3253b947d4d 100644
--- a/addons/website_forum/controllers/main.py
+++ b/addons/website_forum/controllers/main.py
@@ -286,7 +286,7 @@ class WebsiteForum(http.Controller):
 
     @http.route('/forum/<model("forum.forum"):forum>/question/<model("forum.post"):question>/reopen', type='http', auth="user", methods=['POST'], website=True)
     def question_reopen(self, forum, question, **kwarg):
-        request.registry['forum.post'].write(request.cr, request.uid, [question.id], {'state': 'active'}, context=request.context)
+        request.registry['forum.post'].reopen(request.cr, request.uid, [question.id], context=request.context)
         return werkzeug.utils.redirect("/forum/%s/question/%s" % (slug(forum), slug(question)))
 
     @http.route('/forum/<model("forum.forum"):forum>/question/<model("forum.post"):question>/delete', type='http', auth="user", methods=['POST'], website=True)
diff --git a/addons/website_forum/models/forum.py b/addons/website_forum/models/forum.py
index a98b3ef63ca..a9e192c8e65 100644
--- a/addons/website_forum/models/forum.py
+++ b/addons/website_forum/models/forum.py
@@ -4,7 +4,9 @@ from datetime import datetime
 import uuid
 from werkzeug.exceptions import Forbidden
 
+import logging
 import openerp
+
 from openerp import api, tools
 from openerp import SUPERUSER_ID
 from openerp.addons.website.models.website import slug
@@ -13,6 +15,7 @@ from openerp.osv import osv, fields
 from openerp.tools import html2plaintext
 from openerp.tools.translate import _
 
+_logger = logging.getLogger(__name__)
 
 class KarmaError(Forbidden):
     """ Karma-related error, used for forum and posts. """
@@ -379,10 +382,40 @@ class Post(osv.Model):
                 self.message_post(cr, uid, obj_id, body=body, subtype=subtype, context=context)
         return res
 
+
+    def reopen(self, cr, uid, ids, context=None):
+        if any(post.parent_id or post.state != 'close'
+                    for post in self.browse(cr, uid, ids, context=context)):
+            return False
+
+        reason_offensive = self.pool['ir.model.data'].xmlid_to_res_id(cr, uid, 'website_forum.reason_7')
+        reason_spam = self.pool['ir.model.data'].xmlid_to_res_id(cr, uid, 'website_forum.reason_8')
+        for post in self.browse(cr, uid, ids, context=context):
+            if post.closed_reason_id.id in (reason_offensive, reason_spam):
+                _logger.info('Upvoting user <%s>, reopening spam/offensive question',
+                             post.create_uid.login)
+                # TODO: in master, consider making this a tunable karma parameter
+                self.pool['res.users'].add_karma(cr, SUPERUSER_ID, [post.create_uid.id],
+                                                 post.forum_id.karma_gen_question_downvote * -5,
+                                                 context=context)
+        self.pool['forum.post'].write(cr, SUPERUSER_ID, ids, {'state': 'active'}, context=context)
+
     def close(self, cr, uid, ids, reason_id, context=None):
         if any(post.parent_id for post in self.browse(cr, uid, ids, context=context)):
             return False
-        return self.pool['forum.post'].write(cr, uid, ids, {
+
+        reason_offensive = self.pool['ir.model.data'].xmlid_to_res_id(cr, uid, 'website_forum.reason_7')
+        reason_spam = self.pool['ir.model.data'].xmlid_to_res_id(cr, uid, 'website_forum.reason_8')
+        if reason_id in (reason_offensive, reason_spam):
+            for post in self.browse(cr, uid, ids, context=context):
+                _logger.info('Downvoting user <%s> for posting spam/offensive contents',
+                             post.create_uid.login)
+                # TODO: in master, consider making this a tunable karma parameter
+                self.pool['res.users'].add_karma(cr, SUPERUSER_ID, [post.create_uid.id],
+                                                 post.forum_id.karma_gen_question_downvote * 5,
+                                                 context=context)
+
+        self.pool['forum.post'].write(cr, uid, ids, {
             'state': 'close',
             'closed_uid': uid,
             'closed_date': datetime.today().strftime(tools.DEFAULT_SERVER_DATETIME_FORMAT),