I doubt they troll looking for it....but I know a warden who comes on here. I doubt they would put a ton of effort into minor offenses but I bet if someone he came accross had a big vialotion or someone cal tipped something very suspicious they would probably look into it.
...that's what gets guys in trouble 90% of the time...not so much the pictures on the forums but on their computers. Not much more evidence needed.
So to me....it depends...