Comments from feedback form - "I screwed up. This was a bad c..."

I screwed up. This was a bad call on my part. The only thing I can say is that it ticked me off (obviously). I know how much hard work we all put into what we do and when I read such a short, idiotic comment like that in response to a good piece of work that probably took not only a lot of time but also talent to put together, I just raged half from anger, half from defense for the people who work hard around here. But still, I'm in the wrong and it was a bad call. Won't happen again. I am sorry.