So far, I'm the only one. I voted that it works, but it's not worth the loss of our liberties (or whatver the exact words were). Proof? None. I just apply my (limited) logic and figure that if the bad guys can't hide because we're snooping on them, then it's gotta work.
On the second point: it's not worth it. Frak summed up my thoughts on the topic with his quote