[request] Allow Registered Members to post as Anonymous

hi,

my members have requested a feature and i find it quite interesting.

instead of opening private forums to let people talk freely on "special" topics, they would rather have an option saying "Post Anonymously?" to have their profile info hidden...

but their IP would still be logged, their login/pass checked and all identification info should be available in the admin options.

sounds cool, any clues ? any feedback welcome.