I started with OfferUp over the weekend and it's amazing how prevalent this is. After reading your post and all of the similar comments, I have to think that it's not people just being rude. I'm not a conspiracy theory guy but I believe that although there are a lot of rude people out there, it can't just be that. I have to imagine that they are phishing for information and getting paid for it somehow. I've had quite a few people ask if item is available, then ask for my address and then ghost. If asking questions and ghosting is such a recurring issue, there has got to be a reason for it. Is it a yet undiscovered phishing mechanism?