Here’s a simple thing to try: when you thank your buyer, simply say that if they’re pleased with you then you’d really appreciate it if they could spread the word. Many eBay buyers feel like they’ve got a real bargain, and combining this with good customer service could be enough to make your customer go out and start writing down your eBay store’s address on pieces of paper for their friends. If you notice a lot of orders coming from the same town, then you’ll know that this technique is working.