What is (are) your most used Internet ID(s) and how did you come up with it (them)?

I used to go by RobMdza all the time (Google tells me I used to go by that name since circa 2002), which stands for Rob (when I was little I wanted an english sounding name, idk why) + Mdza (which is short for Mendiolaza, the town I live in). Then it got shortened to Rob, but even if I really like it, it's almost impossible to use it, since it is such a common name, so I made alterations of it: RobM, RobWatanabe etc.

Nowadays I go by Whitestep, which is my own style of 2step/dubstep, made entirely by processing white noise... that lasted like 2 songs though. Got painful to listen to