Danger Inc. is responsible for the the Danger Hiptop and the associated software and service support. The Danger Hiptop is sold on many networks under different names, most notably as the T-Mobile Sidekick. The Hiptop/Sidekick line is well loved by the younger crowd for its intuitive user interface and superior instant messaging support. Microsoft did not reveal when the deal would be finalized, but noted that it is excited to bring Danger's 10 year history of expertise in the mobile consumer market to Microsoft." Via MobileBurn .
Will Microsoft ruin the SideKick with Windows Mobile? Stay tuned.