Facebook > FriendFeed > Facebook loop

I wanted to have my Identi.ca microblogging entries in FrienFeed, but since I import my FriendFeed into Facebook (using the FriendFeed application) and crosspost from Ping.fm to both Facebook, Facebook ends up displaying its own entries after a roundtrip to and from FriendFeed. This is of course somewhat related with the Friendfeed duplicate entries issue, but it is worse : without any smart duplicates handling, the FriendFeed application on Facebook should at least recognize Facebook entries and refrain from displaying them.