The T-Mobile Sidekick has been around for some time and has a strong user base that swears by the mobile email machine. The company that produces the Sidekick has recently released the Sidekick 3 with improvements that should make the loyal fan base ecstatic. The new Sidekick is slightly smaller than the previous version and the keyboard is even better to use than before, even though it was pretty good in the last version. The most innovative change may be the trackball that makes navigating the interface very simple and intuitive. There are many other improvements so don’t overlook the Sidekick 3. CNET has a video overview that shows off the many features of the new Sidekick 3.