...Wait, didn't I just say that (with a rectified version at the end of that other VM)? O_o
Only one person (Bay) actually completed the challenge, and only one other person (Astinus) came close. There weren't that many participants otherwise, and 90% of those who were in that challenge didn't even come close, let alone post over five reviews.
Point is, though, the challenge tanked the second time around, either due to timing, the fact that the novelty of it wore off because it was held so close to the last one, or a combination of both.