I've had to report a few people on DA lately for posting hateful, homophobic, racist comments in my gallery and for making comments like, "You should kill yourself," all because they apparently don't like ponies and/or bronies.
The thing is, the comments are removed when reported but nothing is done about the user. I see the accounts are still up and running and those people are still posting their vile messages of hate.
For all the anti-bullying/harassment talk I see from deviantart, they seem quite content to let the offenders stay here. I don't take it personally myself, but there are a lot of young people on deviantart that are probably affected by messages like this, and I report it for their sake. The report button does not seem to do any good though.
I can only assume someone on the team that handles DA reports agrees with these hateful messages because otherwise it's common sense that the offenders would be banned.