To the top of your right hand side and to you left hand side, there will be a "Sign In" button. Click on it, type your username and passoword to sign in. In case, you are not a member of this site yet, then click on "sing up" and register yourself.
You can also sign in via your Facebook account. There's an option for that as well.
It is perfectly safe to sign up for WikiAnswers.
You just press sign out.
No, a Wikianswers account is free of charge.
You have to sign up for it.
When you sign up for WikiAnswers, you are asked to choose your own username and password; you can personalize it from there during the sign-up process.(See the Related question on how to become a member of WikiAnswers.)
No, You cannot log on to Facebook from WikiAnswers. You can sign into WikiAnswers using your Facebook account however.
You don't have to login it is not mandatory.
You can't
The only page that you can have on WikiAnswers is your Bio Page, which you automatically get and can edit at your leisure when you sign up for a WikiAnswers account.
Yes, it is completely free to sign up for this website. WikiAnswers
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The only reasons you shouldn't sign up for a WikiAnswers account are: * Your intent is to ask inappropriate questions and/or answer questions inappropriately. * Your intent is to vandalize WikiAnswers in any way. * If you are going to advertise your website or business everywhere but your Bio Page.