I have a community voting driven news site and I would like to start providing users with recommendations based on what they have voted for. Since each users has an rss feed of their votes I was hoping that there was some sort of recommendation script or service online that could analyze all the rss feeds from all my users and produce a new rss feed of recommendations for each user. I know its possible although I'm sure the math is quite complex, so I doubt it's something I could do myself.