New Android Apps...from Yahoo!
Yahoo! has spent considerable effort letting folks know that this is their first attempt, however their Yahoo! Go had many of the same features. It was developed in Java, so porting it to Android wasn't likely to have been much of a problem.
The three applications, which Android users have an option to install, include one for mail, one for IM, and another which provides a homepage search widget to be used when Google doesn't provide the search results you are looking for.