I hope I'm never truly to blame and the deserving recipient of a -1, but I think I came the closest to one I've been so far, THIS MORNING. In short, I connected my neighbor with a seller on here who has some BCG's for sale. They coordinated amongst themselves and for one reason or another my neighbor screwed the pooch and they never met. I vouched for the guy and he fumbled, and it makes me feel like an ass.

If I were to ever make a deal with a fellow member and they flaked, went back on their word, etc, or I were to do the same, then I think a -1 could be appropriate. Fortunately, as many others have noted, this community is pretty much entirely comprised of "my word is my bond" kind of folks. That can't be said for very many cross-sections anymore.