Earlier this year, I mentioned the FeedTree project out of Rice University. Dan Sandler was nice enough, simply on that mention, to clue me in to the alpha release of the project. Due to various and sundry events throughout August and September, I didn't have a chance to follow up, but I'll plug them again since the project appears to be quite a bit past alpha now.
As a reminder, the idea is to use P2P mechanisms to distribute webfeed changes, presumably helping publishers deal with hordes of bandwidth hungry aggregators. As an added bonus, updates can be pushed to clients before a regularly scheduled pull, leading to more timely updates.
Despite Tim Bray's extolling the virtues of Post and Poll, FeedTree is a worthy experiment. So if you've got an extra aggregator lying around, or publish a popular feed, look into giving FeedTree a try. What have you got to lose?