I go there occasionally, mostly to check out the "Guess the type" subforum. To be blunt, a lot of the forum's members are bad at typing characters. I don't always agree with typings people make here but not nearly to the same extent as on PerC. So many of them are just plain, flat out, extremely incorrect. I don't want to get into arguments over such a trivial thing as what MBTI type a character is so I don't bring it up there even though it bugs me.
On a positive note, most of the members are pretty nice.