CityFeeds - a local aggregator of local RSS feeds. Catchy name. Looks cool. (Via Steve Rubel's MicroPersuassion)
Erik Benson has created a very cool RSS aggregation of his prolific writing on different sites. The page pulls in feeds of his writings and displays them. It looks like a cleanly desgigned blog page but when you look at the permalinks you can see that they all link to other sites. The article about it is here. You can see it in action here. (via Susan Mernit)