Dumping the info here.
North America:
spifiness (HR 13), most weeknights from 7:30-10:30 MT and weekends during the day.
DarkisWR, monday anywhere from 4pm-2am
fuzzykitten3769, varied but usually available on Sundays
cocobrow, evenings after 7 Eastern
kenology, whenever
SmokedHostage, Weekdays 2-6 Eastern Weekends 3-7 Eastern
entilzha, weekend evenings
silvervue, (online name "Kihto"), varied times
arm, 7-11 Eastern
xeroxm3, 5-11 Pacific
Finnbar, whenever
kage848, Mon. 6-12 EST, Tues. 10-2, Wed. 11-2, Thursday 7-2, Fri. 11-2, Sat. 5-2, Sunday 11AM-2PM.
tehkyle00, Tues+Friday 7-2 EST, M+W+F 11-1.
pmaster4, M-Th 8-10.
Pretendo, 4-2.
Skorpion, 7-12 EST.
PAL:
cougarman, Sunday-Thursday after 9 PM GMT
Luthor, anytime