I think the term you're looking for is "sarcasm" and while that does happen to be a hobby of mine, many of my posts would actually fall under the category of "cynicism". That being said, I do on occasion, answer questions from potential AHA employees that can only be answered by someone that's actually OTJ.
Granted, some of my posts are pretty negative but I'd rather unload on this forum than on the people around me. Besides, I don't think anyone here has someone pointing a gun at their head and saying, "Read AngryGerbil or else".