Phew....fixed! This one support Twitpic upload:

http://maemo.org/packages/package_in...r-multi/0.5-1/

This plugin allows you to upload pictures to Twitter using the sharing service of the Nokia N900. It can upload directly to Twitter but it also supports Twitpic, Twitgoo, Mobypicture, img.ly, Posterous and yfrog.

Default is Twitter, but in options you can change it to any of the above