feedblendr
feedblendr mixes together up to 6 rss feeds into a single ‘river of news’ feed, if you want one giant feed and don’t really care to differentiate which site it’s coming from. i set it up as my main netvibes feed with these feeds:
the feed, which is public (they get deleted after 2 weeks of inactivity), is here: http://feedblendr.com/rss/3313