Over a convocation of barley beverage sampling, one of the assembly raised the idea of an aggregator he could use to both collect the feeds he was interested in and then publish that as a meta-feed (Sean’s reading list). I think it’s possible to do that now.
At the same time, it would be interesting to have a way of taking the XML-RPC pings that are used to alert scripting.com and blo.gs of new items and reflect those out to the decentralized community of aggregator users. Right now, an aggregator application makes periodic requests for a new feed or in the case of the smarter ones, checks the modification time of subscribed feeds. Would a ping reflector/repeater network that took the inbound pings at scripting and blo.gs and re-sent them use less resources? I suppose if a subscriber was offline there would be some waste as the connection(s) to that user timed out.