PMysterious, lurking is a way of flying under the radar. If you've noticed, I've only twice been the target of the wolf kill and never once been a lynch target. It is a strategy. The bad thing is, most people lurk in such a way that it hurts the game. Even then, it's still a strategy. A bad strategy, since the lurking is only drawing more attention to the lurker, but it is a strategy.
Also, just a sidenote, nobody ever has to warn someone else if they're going to hammer. You personally may think you have to, and that's fine. But people will hammer without warning. I'm personally not going to get permission from the entire town if I want to hammer. I won't do it stupidly, but if someone is at L-1, I want that person to be lynched, not someone else, and there's nothing else to be gotten from the day, I'm not going to warn about hammering.
Benzo, when it gets to the point that other players are asking the mod give prods, that's when it's a problem. Any sort of lurking that doesn't require a prod is fine. The problem as I see it is players who try to lurk, but then they aren't active at all. Or never come out of lurking when it's required.
I agree, a minimum post count per day should be required. After two days of not making that post count, they should be replaced, simple as that. Warn them the first day, replace them the second.