I ditched the algorithm for RSS

I made my blog software support all feed types back in the day:

http://sprout.rupy.se/feed?rss

http://sprout.rupy.se/feed?atom

http://sprout.rupy.se/feed?json

http://sprout.rupy.se/feed (my own :P)

It's open-source: http://github.com/tinspin/sprout