I've always been a fanatic teamkiller/heckleer, my attention recently being turned to ARMA (Armed Assault - see my latest video here:
http://www.youtube.com/watch?v=PT5st2k1p60)
From building spawn-jails on servers without noclip or an anti-noclip tool on garry's mod, to a few years ago in planetside where i'd kick out a dozen friendlies in my galaxy troopship in the ocean (good times).
My first experience of TKC was back in the vietcong (original) demo where i'd check this website daily for new hacks, especially enjoyable was modifying each team's headgear into large rocks and trees while you lot tried to figure out how to unlock weapons that weren't meant to be there.
Anyway, i'm very knowledgeable in armed assault and a few other games and believe I share your mentality in online games and could perhaps provide something back to the community.
DoctorK