MyMobileStuff offers little more than a preview to desk-bound persons. However, venture over to the site on your handheld and, once registered, you can craft a personal portal that offers seemingly hundreds of sites specifically designed for mobile devices. The site states that it works with both Pocket PC and Palm OS devices, though it presumably works with any mobile device with a web browser and wireless connection. Note that I would not have heard of this site were it not for Ed Hansberry's mention of it on PocketPCThoughts.