pegasusearl You are right, the first one is the official one. I've got the feeling that it has more users than this one. And there are some engine maintainers too. I'm not sure if there are any around here, at least I haven't recognized any names so far.
I didn't know the third one too. I first signed up here because it came up first in the the search results. But now I'm using the official one too.
kuligs2 garbage, its like SO, where nobaddy cares, or you just asking too stupid of a question.
What does that mean? I don't understand.