If you're selling something on eBay, you don't want your item, money, or buyer to disappear into thin air. So it pays to be cautious. Bear in mind, though, that many buyers will be just as suspicious of you. To show that you're trustworthy, build up your eBay reputation. Every eBayer has a reputation score right by their name, which leads to a fuller feedback page. You can improve this score by regularly selling and buying on the site. But while it's good to assuage potential customers' fears, what about your own safety worries? Here's what you need to do to protect yourself.