No. I thought about Directed Edge, but playing with recommendation algorithms was the raison d'etre of the project. I didn't want to make a web site and throw some amazon referral links at it, I wanted to play data miner!
That's great! http://techcrunch.com/2010/09/15/hunch-taste-graph-business-... is another alternative. Maybe you could try tweaking your algo continuously and comparing with how well hunch recommends stuff. The advantage of the hunch api is that it is able to use a lot more info about the visitor to make more awesome predictions. Just curious to see how far it goes!!! http://hunch.com/developers/v1/
