I've been using www.mortalguidance.com ! It has a question and answer area and a debate area . Well moderated and they only step in when necessary . There is also cha cha , answers.com , quora , yahoo answers too . Take a look at mortalguidance !
I used to be on a site called sodahead. It's very much like this one but you have more freedom and You can fix up your profile anyway you like. Plus you can put a music player on there and listen to music and if you get tried of certain people you can block them to where you can't see their post and they can't see yours. I was on that that site for more than a year and had a great time and meant alot of good people on there. Later I talked about 30 of them to going to FB and about five of them I talk to on the phone.