I started growing CP's as a kid and really found them interesting... when it came time to fire up AOL 2.5 and pick a screen name, I wanted "MrFlyTrap" as my SN to reflect my hobby.
AOL rejected it, back then their was a requirement needing one number in your name. MrFlyTrap1 was then coined. As I started to use AOL less and less, I began to use AIM instead, I created MrFlyTrap2. I still like the name and like using the same name on forums as my AIM name, it just makes things easier.