As long as you don't hide the identity of the users, you won't have an honest platform. You want to see how people really think, give the anonymity and you see the true society, good or bad.
Anonymous posters will still try to rustle jimmies by saying something provocative.
You know, sometimes people say something provocative in an effort to make others stop and think critically about something.
A futile effort, of course, but noble, indeed.
There are others, also, who use anonymity to make personal attacks and rude comments, but these are easy to filter.