I started out with PDO and I have to say they were great. I visited everyday. I had discussions with some really great people. For some reason it turned into to who could impress other members with how much they knew. Lots of idiotic squabbling over nothing. Some members were always hijacking a tread and real rude while doing it. Then came the rating system which only made most people cry a great deal if everyone didn't love what they had to say.
I never posted that much so the rating system didn't affect me too much. What some people would do is register multiples times under a different user name and then hand out zero's to those they didn't like. All too childish for me. Solomon let it go down hill as the self moderation system continued to destroy the site. I just checked the site and it's still down.
I have two guesses, Solomon has turned off the site to gather a new start at a later date and shake off the trolls or he hasn't paid any attention and doesn't event know its down. In either case, I probably wouldn't go back. Nobody here has slammed me for either not being agreed with or in disagreement. I like that.