[INTJMom]

Originally Posted by Angry Ayrab

Just as the title asks.

If so why?

This isn't scientific because not everyone reports their type accurately, but out of all the self-reported members listed, I found:
ENFP - 176
ENTP - 106
ENTJ - 46
ENFJ - 38
There are 18 ESTx and 20 ESFx types.

So your observation was probably correct. Out of all the Extroverted groups, the ENFPs is probably the largest.
Why? My guess is that it has something to do with the primary cognitive processes.

Out of all the INs and ENs, their first and second processes have no S function in them.
They're all thinking, intuiting or feeling.
S is a process that likes to observe real life.
Se seems to be the biggest deterrent to spending time on a forum.
Two introverted processes seem to trump S in some types.

These are only members whose whole type was listed - just to give a general idea.

INTP - 436 Ti Ne Si
INFP - 306 Fi Ne Si
INTJ - 279 Ni Te Fi
INFJ - 240 Ni Fe Ti
ENFP - 176 Ne Fi Te
ENTP - 106 Ne Ti Fe

ENTJ - 46 Te Ni Se
ISTP - 45 Ti Se Ni
ISTJ - 39 Si Te Fi
ENFJ - 38 Fe Ni Se
ISFJ - 33 Si Fe Ti
ISFP - 29 Fi Se Ni

ESFP - 11 Se Fi Te
ESFJ - 9 Fe Si Ne
ESTP - 9 Se Ti Fe
ESTJ - 9 Te Si Ne