On my reputation, it says reputation for today is -2...but I can't find what would have caused that, and I have a total history of 0 down votes, so I don't even know how I could have gotten -2. If I lost an upvote, that should be -5.
A non-answer located here:
was downvoted That's where the rep was lost. The answer was deleted by a mod in response to a flag as it isn't an answer.
Or, at least it wasn't an answer as soon as comments were rolled into the system...