Uhm, lets see..ive worked for Steam..Vac2 does NOT wrongfully ban people btw. It scans for memory injections in the ring3 mode. it WILL not ban someone wrongfully. So if they say "oh i never cheated" thats complete bullcrap. And most ppl ARENT epic good. its not like pubs matter anyways, i play in league competition only and i was 3rd best source player in the world in 2006. Ppl think i cheat all the time... i just take it as a compliment and its not like im going to get vac banned because i dont cheat..so dont say you have friends who have been vacbanned that havnt cheated, because thats not the case. You get vac banned, you HAVE cheated.
This is the reason i play in league play only. because they have a client ANTI-CHEAT program. It scans for ring0 and ring3 modifications of the game memory (kernel mode). So basicallly, if you get cheat, you caught, dont deny it.