In reading through the answers which for some reason I just discovered I had not been notified of, I was inspired to write another, edgier question. (Which just got it's first answer, I notice.):
Used correctly, this site can be a great way to affirm my sense of the goodness of humans, and my part in it all. (Used incorrectly, well...you know.)
Here are the answers so far; the link, in case you want to add a reply or see if there are any more comments, is above with the original question. I would love to hear what you have to say.