diff --git a/weboob/backends/inrocks/GenericBackend.py b/weboob/backends/inrocks/GenericBackend.py
index b1236d58..3b8f4819 100644
--- a/weboob/backends/inrocks/GenericBackend.py
+++ b/weboob/backends/inrocks/GenericBackend.py
@@ -21,7 +21,7 @@ from __future__ import with_statement
 from weboob.capabilities.messages import ICapMessages, Message, Thread
 from weboob.tools.backend import BaseBackend
 from weboob.tools.newsfeed import Newsfeed
-from .tools import url2id
+from .tools import rssid
 
 class GenericNewspaperBackend(BaseBackend, ICapMessages):
     "GenericNewspaperBackend class"
@@ -67,7 +67,7 @@ class GenericNewspaperBackend(BaseBackend, ICapMessages):
         return thread
 
     def iter_threads(self):
-        for article in Newsfeed(self.RSS_FEED, url2id).iter_entries():
+        for article in Newsfeed(self.RSS_FEED, rssid).iter_entries():
             thread = Thread(article.id)
             thread.title =  article.title
             thread.date = article.datetime
diff --git a/weboob/backends/inrocks/tools.py b/weboob/backends/inrocks/tools.py
index 6cc231fc..6f36a172 100644
--- a/weboob/backends/inrocks/tools.py
+++ b/weboob/backends/inrocks/tools.py
@@ -32,3 +32,6 @@ def id2url(_id):
 def url2id(url):
     "return an id from an url"
     return url
+
+def rssid(entry):
+    return url2id(entry.id)
diff --git a/weboob/backends/lefigaro/GenericBackend.py b/weboob/backends/lefigaro/GenericBackend.py
index b1236d58..3b8f4819 100644
--- a/weboob/backends/lefigaro/GenericBackend.py
+++ b/weboob/backends/lefigaro/GenericBackend.py
@@ -21,7 +21,7 @@ from __future__ import with_statement
 from weboob.capabilities.messages import ICapMessages, Message, Thread
 from weboob.tools.backend import BaseBackend
 from weboob.tools.newsfeed import Newsfeed
-from .tools import url2id
+from .tools import rssid
 
 class GenericNewspaperBackend(BaseBackend, ICapMessages):
     "GenericNewspaperBackend class"
@@ -67,7 +67,7 @@ class GenericNewspaperBackend(BaseBackend, ICapMessages):
         return thread
 
     def iter_threads(self):
-        for article in Newsfeed(self.RSS_FEED, url2id).iter_entries():
+        for article in Newsfeed(self.RSS_FEED, rssid).iter_entries():
             thread = Thread(article.id)
             thread.title =  article.title
             thread.date = article.datetime
diff --git a/weboob/backends/lefigaro/tools.py b/weboob/backends/lefigaro/tools.py
index c1179a10..9fc522a3 100644
--- a/weboob/backends/lefigaro/tools.py
+++ b/weboob/backends/lefigaro/tools.py
@@ -32,3 +32,6 @@ def id2url(_id):
 def url2id(url):
     "return an id from an url"
     return url
+
+def rssid(entry):
+    return url2id(entry.id)
diff --git a/weboob/backends/minutes20/GenericBackend.py b/weboob/backends/minutes20/GenericBackend.py
index b1236d58..3b8f4819 100644
--- a/weboob/backends/minutes20/GenericBackend.py
+++ b/weboob/backends/minutes20/GenericBackend.py
@@ -21,7 +21,7 @@ from __future__ import with_statement
 from weboob.capabilities.messages import ICapMessages, Message, Thread
 from weboob.tools.backend import BaseBackend
 from weboob.tools.newsfeed import Newsfeed
-from .tools import url2id
+from .tools import rssid
 
 class GenericNewspaperBackend(BaseBackend, ICapMessages):
     "GenericNewspaperBackend class"
@@ -67,7 +67,7 @@ class GenericNewspaperBackend(BaseBackend, ICapMessages):
         return thread
 
     def iter_threads(self):
-        for article in Newsfeed(self.RSS_FEED, url2id).iter_entries():
+        for article in Newsfeed(self.RSS_FEED, rssid).iter_entries():
             thread = Thread(article.id)
             thread.title =  article.title
             thread.date = article.datetime
diff --git a/weboob/backends/minutes20/tools.py b/weboob/backends/minutes20/tools.py
index 0cf9f34e..871da413 100644
--- a/weboob/backends/minutes20/tools.py
+++ b/weboob/backends/minutes20/tools.py
@@ -34,3 +34,6 @@ def url2id(url):
     regexp = re.compile("http://www.20minutes.fr/(\w+)/([0-9]+)/(.*$)")
     match = regexp.match(url)
     return '%s.%d.%s' % (match.group(1), int(match.group(2)), match.group(3))
+
+def rssid(entry):
+    return url2id(entry.id)
diff --git a/weboob/tools/newsfeed.py b/weboob/tools/newsfeed.py
index 72fa874f..4f7a837e 100644
--- a/weboob/tools/newsfeed.py
+++ b/weboob/tools/newsfeed.py
@@ -23,11 +23,8 @@ __all__ = ['Entry', 'Newsfeed']
 
 
 class Entry:
-    def __init__(self, entry, url2id=None):
-        if url2id:
-            self.id = url2id(entry.id)
-        else:
-            self.id = entry.id
+    def __init__(self, entry, rssid_func=None):
+        self.id = entry.id
 
         if entry.has_key("link"):
             self.link = entry["link"]
@@ -63,16 +60,19 @@ class Entry:
         else:
             self.content = None
 
+        if rssid_func:
+            self.id = rssid_func(self)
+
 class Newsfeed:
-    def __init__(self, url, url2id=None):
+    def __init__(self, url, rssid_func=None):
         self.feed = feedparser.parse(url)
-        self.url2id = url2id
+        self.rssid_func = rssid_func
 
     def iter_entries(self):
         for entry in self.feed['entries']:
-            yield Entry(entry, self.url2id)
+            yield Entry(entry, self.rssid_func)
 
     def get_entry(self, id):
         for entry in self.feed['entries']:
             if entry.id == id:
-                return Entry(entry, self.url2id)
+                return Entry(entry, self.rssid_func)