Thing I've noted about nicks: they tend to reveal themselves eventually. Personality isn't your name, that's just the lable you paste over who you are, and that doesn't change.

There's an old saying: three can keep a secret if two of them are dead. In modern times, the secure threshold may have been incremented. The short solution: if you've got something you don't want to be publicly available and accessible, don't say it in public. It's very difficult to re-cork the genie, and putting the onus on others to accommodate your own indiscretion strikes me as somewhere between naive and supremely arrogant. If I have nothing to say (in public), my lips are sealed.

You've got a number of issues, you obviously feel a need to discuss them, and this seems to be one of the few groups you're comfortable discussing them with. You're saving yourself therapy bills, but one of the "hidden" costs is the fact that your disclosures are very much public, searchable, record. You're either comfortable with this or you're not. But that's your problem.

Group therapy, in realspace, might be an inexpensive, more private, option.

Again: I view my own public image in this and other forums as something largely under my control. I'm concious that I'm projecting a public image. I try to portray an image I can live with. Google's recent unearthing of old archives did dredge up a few interesting moments from my own past, though ;-)