My "first impression" review of Google & Yahoo web based applications + My current "updated" review of Yahoo and Google web apps (Calendar, Notes, Docs, Email, Spreadsheets, etc.)
Here are some of the differences between Google's personalized homepage and Yahoo's personalized homepage. Both offer a way to keep all of your favorite things at your fingertips -- no matter WHAT computer you're on...
I have a feeling that most people (even those who use Yahoo for e-mail) are not aware of the wide variety of free tools and services available for FREE! Simply by using MyYahoo as your homepage, you can incorporate a number of really cool Internet features.