I host sniperlobby's, free to join but there are rules:
1.Don't hardscope, its no-scope and quickscope only.
2.Only use Sleight of Hand, Marathon, Stopping Power, Ninja or Commando.
3.Don't spam or whine, very anoying.
4.Only use the Intervention, no equipment like stun, flash, smoke, throwing knife, semtex etc.
5.If i host a SnD lobby, the last killcam has to be nice, not a medium noscope or long range quickscope, atleast a air 360 or long range nopscope. A nice wallbang is also good.

I host most times HQ or CTF, with a few ppl FFA and sometimes SnD with nice last.

Greetz,
wiZe