Like the mobile facebook app...
Get updates to posts in your threads, or threads you subscribe to on your mobile phone, blackberry, etc....
Make it visble and easy to read, so- get rid of the signatures and avatars, and just have it show usernames- and posts, with the option to follow a link to picture.
This should be hard to implement at all.
One way I can think of is to have wu-corp server send the pages in different format when it detects mobile web browsers.
Make it happen.
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