So I quickly checked out Swamii. It's a search aggregator for common topics so I thought I'd try out Web 2.0 since, hey, I don't have enough Web 2.0 RSS feeds 
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But no, there doesn't seem to be one? Also, you can't use it until you register. Although it's quick, I still think it should be possible to use it without (just save it in a cookie on your machine like Google News does).