nice to see some data but a little more qualitative analysis seems called for. like, i don't know what the current userbase of chatroulette is like, but from th

nice to see some data but a little more qualitative analysis seems called for. like, i don't know what the current userbase of chatroulette is like, but from the reputation 10 years ago i would guess that a significant proportion of users are looking for someone they find attractive. if this is the case, and given that people are on-average heterosexual, then it would not be at all surprising that a 2-chain-based system would perform much worse than random. again, i'm not sure that this theory is well-founded, but it would be nice to see some demographically-informed discussion. also, saying that 2-chains didn't work doesn't seem to justify the title. collaborative filtering is broader than a single technique.