Another ebay rant -scam by buyer

I buy and sell on ebay. My personal experience has been pleasant. I have found the people to be very friendly and I have never had a bad feedback. I have found it a great way to buy and sell. However, just like flea markets, swap meets, and even FABO (lots of threads slamming buyers and sellers here), there are jerks everywhere.... and I'm sure ebay is no exception!