Microsoft is busy working on
Windows Live and recently rolled out their button for websites and blogs that have a RSS feed. RSS is, very basically, a way to syndicate content around the entire Internet. We are one of the sites to make use of RSS. I put up "the buttons" for Live, Yahoo and News Gator so you can add WinVistaForums.com's latest content to any of these. You can find more about what Windows Live is doing with this
here.
I use the major search engines, but I don't do much customizing on them.
I find myself wondering how many people use this type of feature when they go to use a search engine?