My name actually came from an old E-mail account. I had named that account from my initials mdk and then tried to select an abbreviation for my location, CT and USA were taken so the next obvious level was NA for North America, thank god that wasn't taken otherwise I might be mdke (Earth). The reason I added the 2 at the end was because I messed up my first RS account during the early days you were only allowed a few pker to non-pker transitions, and I used all of mine up exploring this feature. So mdkna2 is my second account using the mdk name. Oddly enough I've become so used to that 2 that when I want to use my mdk name in something else I always add the 2 in.