I just want to say that regardless of how things turn out this weekend, I think the members of BellKor's Pragmatic Chaos are probably the best collaborative filtering researchers in the world. In particular, Yehuda Koren's contributions to the field over the past few years have been enormous. I also consider Pragmatic Theory's rise to the top spot while working full-time in an unrelated area to be a jaw-droppingly impressive feat. Of course, I have no particular standing to make such pronouncements, but that's what I think.
Nothing that has happened or will happen over the next 24 hours is going to change that assessment.