It's a very liberal neighborhood, and a university community - so I'm sure that's what's going on. I was pretty laissez faire about it (in fact, I think it's nice that things get passed on) - until they started stopping for stuff without a free sign (I had to stop them from taking stuff off my porch that I intended to keep), and petty crime (i.e., shed break-ins started happening). I don't know - the people trolling to re-sell just struck me as creepy. I now put lists of stuff on the neighborhood email list and ask people to email me.