I’m curious how you’re generating your particular feeds. For over a year now I’ve been using a simple bookmarklet system to post what I’m reading, listening to, and watching to my own website and providing it as various feeds (RSS, JSON, and a microformats-based hfeed/h-feed) for others as well as syndicating some of these to other sources. (For the RSS feeds just add /feed/ to the end of the links above. You can also chain them like so http://boffosocko.com/kind/read,listen,watch/ to get multiple feeds at once.)
I wish others were providing this type of data outside of the big silos as well, but it obviously needs to be much simpler.