Another Yahoo! Answers topic: "Is nanotechnology all hype or the real deal?"
Answers range from the equivalent of "You're already soaking in it" to "it doesn't exist yet." The thing is, they are all correct, depending on how you want to define nanotech. (I lean toward the latter, but not all the way).
I guess the main problem I have with Yahoo! Answers is not that some of the "answers" are questionable, but that the questions do not stay open long enough for the self-correcting peer review process to go into effect. For that, I'll stick with Wikipedia.