I have bought a bike on ebay. The bike I am riding now I got there. I did my homework first. I talked to him about it for almost an hour the first time calling and got a lot of info about him as well. I also wanted to make sure he didn't have a unlisted number so I could use google to look up his number and it will give me his name and address and everything else I wanted to know. You really need to be careful on it cause you could get burnt and then again if your smart about it you will be ok. What kind of bike are you looking for and what price range??