I use MyYahoo! all the time, primarily for keeping track of my RSS feeds. Yes, i've customized the sports scores to show my favorite teams, and the stock quotes to show my stocks, and the weather to show my weather, etc.... but that's not why I use MyYahoo.
I use it to browse RSS feeds of the 30 or so blogs that I read every day. My Yahoo makes it easy to add new feeds, and also, many blogs now have a MyYahoo button on them which makes it a two click proposition to add a blog to your My Yahoo reader. Great site.
