I'm still a total n00b. My GPS should show up tomorrow. I do have a few finds already, which I've gotten by cherry picking easy or familiar places and using Google Earth to get close enough. But I'm checking stuff out, and there's one on there that's a bottle cap on top, with a place to put your log sheet, and then it goes down into the ground with the bottle cap on top. First, that's a buried cache. It's in the ground, and there's not really any way to argue otherwise. I get that other listing sites might be more lax with their rules and allow it, but that doesn't change the fact that something similar could be done without burying anything. But it's going to get covered with leaves or grass clippings, so it might as well be buried. Raking leaves isn't fun.
There's also one that's a realistic piece of crap. I mean literally, it's made to look like a chunk of feces. Playing with poop isn't fun. What if it's in the park and there's dog poop everywhere? I don't want to have to check all the poop in the area to see if any of it is fake. Number one, it's poop. Number two (heh) what if someone I know sees me pick it up and thinks it's real? Word would get around and I'd be known as "that guy who plays with poop".
Why would people do this? That's not fun, it's just mean. I wouldn't even look for a cache like that, but you usually don't know.