Newgrounds.com — Everything, By Everyone.

I lately discovered that being on NG was not so important for me:
It was natural: I got tired of flagging and writing reviews and my newspost were months away one from another.
Lately I stopped voting for the best submissions for the month and I realised I just wanted to play some new game, from time to time.
I guess no point retribuition sistem or rank progression can stop such process: if you are not a flash artist or a game programmer sooner or later you discover you have many things to do more intresting than being an active member of a flash community.

Leaving NG? That is not the point, since you can just come and take a look around sometimes.