Having used the Sidekick for almost 5 years, I have to say that I'm inclined to agree that JiveTalk is a better IM client than the Sidekick's native one. On the other hand, the Sidekick is a better device overall in terms of ease of use and intuitive interface. Despite T-mobile's decision to market the Sidekick mainly to kids, a more natural demographic would be older adults who want the communication capabilities of the Blackberry without the technical overhead. No end user, ever, should have to know about things like "freeing up memory," service books, and so forth. The Sidekick, not the Blackberry, is the device for your technophobic Uncle Charlie who would still like to be able to send email with photo attachments, check things on the web, and so on. With MS taking over Danger, and the exclusive contract with T-mobile ending, we may well see the marketing strategy for the Sidekick changing as well. The fact that the Sidekick does what it does affordably (for now) is not a small point either.