I was one of the early (and frequent) contributors to the ENTP forum at egroups.com (subsequenty purchased by Yahoo!).
I stayed for a long time but the numbers really exploded and the signal-to-noise ratio was too much for me. The group culture changed and I lost interest.
I'm still interested in MBTI but at this point in my life I don't find it necessary to exchange ideas with a homogenous group of ENTPs.
I find myself more interested in understanding other types. That way I can better manipulate them into loving me.
That was ENTP humor!