Rafe Needleman / CNET News.com:

Exclusive: Twhirl gets pushy with Identi.ca  —  The next update of Twhirl will get support for yet another nanoblogging service, Identi.ca, and on that platform Twhirl will feature a communication method that Twitter users have been asking for: push updates.  —  Read to end of story for the download link and instructions.