This is where it becomes a problem. There's no good reason an elementary school teacher shouldn't be allowed to pick up belly dancing as a hobby. However, if she were forced to upload her videos under her real name instead of "Fatima the Enchantress," she's much more likely to lose her job. People are quick to judge about that sort of thing.
Hint: It's the eyes.
Likewise, there's a lot of reasons you might not want people to see you posting on a forum for online gaming. Maybe you're running for office, like this guy.
Ed Hermes: hardcore Halo player, aspiring County Supervisor.
While your Halo skills may win you younger voters, that only helps you on the extraordinarily rare occasions that they actually vote.
Or maybe you just want to surf some forums without being surrounded by ass-kissers but you happen to be Axl Rose.
Unfortunately, in the argument over whether we should make online identities transparent, those of us who prefer online anonymity for innocent reasons will constantly be confused with the other groups on this list. Mostly because that's exactly how they want it.