I just used it on a trial account, c2p from sw to bb on a l7 rogue, no ban or dc...
i think the people getting banned are just abusing it in bgs or around lots of people
ive been leveling a toon in northrend for the past couple days using c2p on my real account and have not had any warnings or bans...
as for the guys who got an insta ban, why dont you tell us what you did b4 you got banned because it sure as **** doesnt bann you just from starting it...
everyone who got a ban should put in detail exactly what they were doing with the hack....