They seem to be planning full RSS (or Atom?) support, but for now there are only about 10 feeds you can select from. Along with the BBC, Wired News, and Slashdot, I’m very pleased to report that they’ve chosen my Quotes of the Day as one of the feeds. It is using RSS, as you might have guessed, and someone at Google was nice enough to email me to let me know they’re using my feed and warn me that it might bring me some traffic (bring it on!)
As Jeremy pointed out, Google has taken a tiny step toward becoming a “portal” rather than a mere search engine. It will be interesting to see where they go from here.