I know the old man had a few he played with and after his operation, I've looked at them and don't want anything to do with them. One is the fact that I just don't have time.
A-Mirite looks like a kid's site and that Similar Worlds isn't for me. I would get kicked off that site within hours!
But, to be honest? I just usually have time in the mornings to be on any and I choose this one as the people are so friendly and nice.