Index: og.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/og/og.module,v
retrieving revision 1.148
diff -u -r1.148 og.module
--- og.module	28 Mar 2006 21:20:21 -0000	1.148
+++ og.module	31 Mar 2006 01:26:58 -0000
@@ -539,6 +539,12 @@
     if (!$subscriptions[$uid]) {
       $subscriptions[$uid] = array();
     }
+    
+    //Allow other modules to add their dynamic subscriptions
+    //hook_og in this case will return a regular indexed array
+    //of the additional organic groups to subscribe to for this $uid
+    $munged_subs = module_invoke_all('og', 'user load', NULL, $uid, $subscriptions[$uid]);
+    $subscriptions[$uid] = $munged_subs;
   }
   return $subscriptions[$uid];
 }