I don't make the most respectable posts... I don't know how I'd feel about using my actual name. I really feel bad about the way I act (what feels like) most of the time.
Even if I acted better, I'm not sure how I'd feel about it. But even now, you might be able to find my name if you tried. Cuz here's the dangerous thing - the crossover between your different accounts on the web. If you use the same username twice, I now have all the information you posted on the second account. And from that second account, I might find the name of your third account with a different username. Now everything you've ever done on THAT account is available to me, and maybe I'll find your Facebook, where you live, pictures of you...
It works both ways, too. The people you know in real life can find everything you do online, just by glancing at one of your usernames, knowing a site you go on, or even easier, by just knowing your email address!