Any violation of forum guidelines can get you a warning. Trolling, baiting, disruption and harassment won't generally result in a ban, but rather warnings. 3 strikes and you're out. It's the length of the ban that you need to worry about though. A gross violation will get you anywhere from a few days, to forever.

The other ban is for the guy that signs up and does nothing but spam. No time for that.

So Ed, you have nothing to worry about. Don't call anyone a ****, and you'll be ok.