i used to be on invisible because basically i didn't want people to know how much of a loser i was and how much time i spent lurking/posting on bluelight.
now i'm on appear online cos i a) don't give a shit. i've got nothing to hide. and b) don't post that much. still lurk quite a bit though.
HOWEVER my stupid computer has been doing this thing where if i don't post every 15-20 mintutes or so it automatically logs me off, which is really annoying. it used to do the same thing, i think (!), when my mode was set to invisible, but at least people didn't notice me logging on and off all the time then. actually, probably noone ever notices it now anyway, but i was thinking of going invisible again just for this reason, but in the end i thought, stuff it.