I think something like two thirds of these users are now either banned or have moved on to annoy people on other forums. I generally don't ignore anyone unless they're either a bot or a troll/idiot/obnoxious person with no redeeming qualities whatsoever (being entertaining counts as a redeeming quality, which is the only reason people like SEC agent aren't on my list).
Yay ! I made someone's ignore list !
FWIW, here's mine.
Inaba
cypherdoc
nathanrees19
dlasher
The00Dustin
m3sSh3aD
GenTarkin
kano
nbtcminer
MPOE-PR
crazyates
NEO2012
Nemesis
papaminer
Atlas
SLok
int03h
Henchman24
grnbrg
nottm28
HUSTLER
tempestb
ThatDGuy
Endlessa
Kamehameha
eve
bcp19
Ira H. Fuchs
fractal02
I'm a fan of peeking in on and touching the poop from time-time, though.