Got this from another site:
http://mobile.yahoo.com/go#
Looks like Yahoo Go development is continuing apace with the release of Yahoo Go 3 (Beta). You can grab a download here, but a perusal of the compatible devices list seems to indicate that it's only compatible with Windows Mobile Standard for now. New features include: An integrated at-a-glance Yahoo screen, improved Yahoo oneSearch, prettier design and navigation, full-on widget support, with in-app widgets like MySpace and eBay.
Yahoo! Go is today’s essential solution for anyone with a mobile phone. It’s an all-in-one offering that lets you enjoy the best of the Internet on your phone—for free.* Send an email, upload photos, download a map, search for answers, check stock quotes, or get breaking news—all that and much more is available through Yahoo! Go.
*Your carrier’s standard charges may apply.
Your ideal starting point.
The new start widget for Yahoo! Go is the best gateway to get where you’re going on the mobile Internet. You’ll get an at-a-glance update of what’s new since you last logged on: how many new emails await you, upcoming calendar appointments, new photos posted by your friends. Next comes a collection of mobile Snippets: previews of your favorite Web content such as news headlines, weather conditions—whatever you decide you want. Also, it helps you instantly get where you want to go on the mobile Internet via Yahoo! oneSearch™ and customizable quicklinks
Get exactly what you want.
Design your ideal Internet experience using Yahoo! Go's Mobile Widgets. Choose from an ever-growing selection of these mobile applications, from Yahoo! as well as your other favorite Web brands. An auction junkie? Add the eBay widget. Addicted to MySpace? We’ve got you covered. Add and delete widgets anytime to make sure your phone reflects your unique needs & personality.