I actually remember this , despite not being an active member on the forums.
Personally I thought it was kind of odd that this feature was even including, unless the creator , staff didn't mean for it to be 'harmful' in some way. But kind of glad that it's removed since this place is mostly positive than negative and they want the community to feel 'safe' not 'threatened' because of some 'biting.' Just my opinion of course.
Nice Topic ~
I myself do not remember the biting option. Never would have though it would have existed. While I know it was probably put there just for fun and games, I bet some people would have abused it somehow. And it does kinda seem like a rather harsh thing to do. I would feel bad if I came on one day and my karma had randomly dropped. Especially if I didn't do anything. So yes, I am rather happy this feature is no longer available.