My etymology isn't that exciting, either; my company gave out IDs that were usually three letters long, consisting of substr(lc $firstname, 0, 1) . substr(lc $lastname, 0, 2); hence, "Philip Newton" turned into "pne".
This was my login on all the Unix boxes as well as the Novell (later NT) network. So far, I'm generally in luck and can use that username on Internet sites as well, except when it's taken (fairly rarely) or they have a minimum length requirement, in which case I usually go by boring things such as 'pnewton' or 'philipnewton'.
My AIM screen name 'mizinamo' is more interesting, though :)