I'm glad I didn't use my real name when I was first on the net at age 14. Why would I want a public record of ideas I now realize were (at best) half-baked? There's no upside to such a record, especially since an undiscerning reader might mistake those comments for something I said last week and not the rantings of an adolescent who hasn't exist for 15+ years. As an adult, I attach my real name to just about everythi…
For example, if you're in a conservative town and you're using your real name while arguing for civil rights for homosexuals, you might draw nutcases tracking you down and harrassing you for your simple viewpoints instead of engaging you in the medium you participated in. This isn't a matter of not owning what you say, but a matter of putting a layer of insulation between yourself and immature idiots.
Another issue with real names comes from identity theft - using real names makes the process a little easier. Real name + known site hack = half the job done.
Pseudonyms aren't just about trolling, they're also a social firewall.