I've been playing Glitch since Alpha and I've heard a fair bit about griefers and trolls but never experienced it. But (and yes this is mild) I've just had a large herb garden, vege patch and freecycle pile completely cleared out on my home street & nothing left in return. I know people can do whatever they want in your street, if you leave it out then it's fair game. But it still made me really quite sad.
*whimper over*