Unfortunately - that's an impossible task - given that there are millions of registered users ! It's always a good idea - if you've asked a specific question - to cross-check any answer with a known source to confirm the information is correct.
WikiAnswers' members are of all ages.
WikiAnswers members come from all around the world.
No, Wikipedia and WikiAnswers are two different websites. You need to create separate accounts for both sites.
There are members of absolutely all ages on WikiAnswers; the minimum age is 13, though.
WikiAnswers has so many members because Wikianswers is a great site to ask your questions and get them answered [by real people], or answer a question yourself. So, why not join the WikiAnswers Community today?
Some members of WikiAnswers do, sometimes too much.
The oldest person on Wikianswers I've seen was in his late 50s.
Yes - provided you don't take every answer as 'gospel'. You have to remember there is NO way to check the credentials of the person answering the question. Therefore, the answer they give may not be completely accurate.
the credentials needed to cash a check are usually your credit card and drivers licence.
It provides answers, in the form of a wiki (a website which can be edited by members of the public).
Community members are free to create their own unofficial groups on WikiAnswers.
You absolutely should check the credentials of international movers. You want to be sure they are a legitimate company that is not going to take advantage of you in any way.