Share 'My NefFlix ratings: how do they influence "Movies You'll Love"?'

I'm interested in how the algorithm for NetFlix ratings<=>Recommendations works. I like perusing the "Movies You'll Love" section on NetFlix to find movies I might otherwise never rent. I'm curious, if anyone can possibly know these things, how my ratings influence what I see there. For instance, say I really like Sci-Fi movies, but I rent one that is awful and give it a one-star rating (…