Having used it quite literally zillions of times, when the registration form prompted me for a screen name, I started typing in rzeznikj. Wasn't sure if @ would show up, so wrote out at, and put stout (instead of uwstout.edu). The rest is history...
To this day, I've kept the rzeznikj moniker precisely because it's easy to remember. Though my new college (Univ. of WI-Milwaukee) has me as jrzeznik. So maybe I'll have to see about changing my SN just a bit.
Or maybe I won't. Who really knows...
Cool!