XP-erience was the first forum I ever joined. At the time, I was a little skeptical, so I decided not to use the alias NetRyder, which I was using for everything else...IM, chat etc.
Instead, in a moment of inspiration (or lack thereof =P), I picked the name XPMagic (pathetic, I know). I was more of a lurker here during the early stages of XP-erience, posting only now and then, so I figured the name didn't matter too much anyway. Within a month, however, I came to love the place and decided that I could safely switch over to my usual alias. Besides, XPMagic just sounded incredibly stupid. As I said, I picked the name without giving any serious thought to it initially.
So I sent a PM to Jewelzz (who was a SMod/Mod at the time), who in turn asked me to re-send my request to EP. So that was it.