In my current group, of which there are seven of us, I'm the only one to even have an ENWorld account.
In my circle of local friends who are gamers, of whcih there are 12, only two besides me have ever had ENWorld accounts, and they don't use them.
If you add all the friends I gamed with in Houston before I moved to Austin, the "gamer friends" total rises to 18, but the total number of ENWorld users doesn't change.
So ultimately? Just me.