How do I erase my Yahoo Answers account?

You really can't. Only Yahoo can delete a YA account however, you could do this: Click your avatar, delete all your contacts click edit my info, delete the info in your profile including your personal avatar if you had one, set everything to private and , uncheck to receive ims or emails, click save don't return to the site.Your questions and answers remain on the site they are the property of Yahoo.

it does not affect your email account, it remains active.

An alternative would be to completely close all your Yahoo accounts.Go below, follow the prompts. http://help.yahoo.com/kb/index?locale=en_US&page=c...

The Yahoo Answers Account can't be closed without closing your entire Yahoo ID. Even if you do your questions and answers remain. The best you can do is remove the avatar, change the nickname to something else, remove any comments, and block all communication and viewing of your Q&A in the profile.

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Bottom line is that you can't. All your question and answer content that is posted here is permanent once it is no longer OPEN. Even closing the linked email account won't remove that content. The only thing you can do is to make everything as private as you can - and then leave.