Just thought I'd share my camping experience from this week. Now I am normally run and gun but This worked once so I thought I try it again and again and again...
All I do is camp right in the middle of the road, lay down and look towards the other team spawn area. Out in the middle no cover or anything. Picking them off as they run by. Pretty much any map I've tried it, usually lay down exactly where the B dom flag is.
I haven't gotten a Merciless, but a few bloodthirsty's. It just blows me away at how little attention people pay to things laying down.
Anyways I don't condone camping and I never really do it. But I could resist to show people just don't pay attention.