Yahoo Go: Yahoo Apps on Your Mobile

Yahoo! Go is a slick mobile application designed for Yahoo users. Access Yahoo! Mail, Flickr photos, Local Maps & Business Listings, Web Search, News, Weather and favorite feeds from your mobile.

“Yahoo Go 2.0 is among the most ambitious attempts to put a Web portal on a phone. And it works.”

Yahoo! Go Features

Easily access Yahoo Services directly from mobile phone.
Search Engine: Access Yahoo web search
Flickr: Acces and View your Flickr albums and pictures.
Yahoo Mail: View, Manage and Reply to your emails. All changes will be automatically synchronized with online Yahoo account.
News: Latest Global, Entertainment, Sports and Finance News.
FeedReader: Add feeds from favorite blogs/websites.
Weather Tool: Configure quick weather access for your zip code.
Access Local Maps and Business Listings i.e. restaurants, pizzerias, etc., with direct dial feature.
Supports over 120 mobile phones. Custom iPhone version available.
Try Yahoo! Go right from the web interface here (no registration required@yahoo.)
Important: Yahoo! Go is a free service however depending on your carrier and mobile service plan data-transfer fees may apply.