Arguably a little late to the party, Yahoo! today announced the release of their very first Android apps for Messenger and Mail, a Yahoo! search widget for your home screen and some HTML5-optimized sites for the iPhone.
The Messenger app does pretty much what you’d expect: it allows you to chat with your Yahoo!/MSN friends, and can run in the background (with push notifications) for that always-on availability. If you live in Canada, Indonesia, India, Kuwait, Malaysia, Philippines, Pakistan, Thailand, United States, or Vietnam, you can also use the app to send SMS to friends, which will appear in the current conversation.