well, nothing scientific here...i don't type too well (one finger and lots of mishits), and unfortunately quite sloooowly also...so when i waas prompted for a username i thought i'd quickly pick a pair of lowercase (to heck with the caps key) letters that were closest to the centre of the keyboard
it's really just a coincidence that the two i hit are also my initials
...i was actually aiming for the 'h'