I use Blurtit. I have an account over at AnswerMug but pretty much hate the site. I've never seen so much ass kissing going on as I've seen over there. There are a "chosen few" that rule the site and you better not disagree with them or you get bombed with insults and reported. You've got to watch your back or you'll get f'ed over.
Yahoo Answers is where I started and it's how I found this site. Otherwise I don't have any other accounts.
Blurtit ,yahoo answers, and answermug.
Just Blurt it.
Luckily A Site Like Experience Project is back!
Half way decent community Id suggest people go there, you can answer questions, join groups, its a bit young sometimes but its very nicely designed. Decent place for Q&A as well.
If any of you join send me a friend request
Blurtit and I like to read some of the answers on Quora every couple of weeks or so.
Blurtit is Bae, man.
I signed on at Answer mug, but I find it a headache and very clicky. I've not even bothered to answer any questions, I get the feeling it is more of a sounding platform for some.