If the pictures aren't copywritten(must be stated as such on each photo), he/she isn't doing anything illegal. He may have needed a picture of a 4-Runner similar to the one he is selling, went and found one. If you share your photo's on the internet and you don't copywrite them, anyone is free to use them as they wish. The internet is a public domain, and in a public place no permission is needed to take someones picture or that of their property, and do with it as one pleases. As mentioned, the best thing to do when you find someone using your pics, is to change the link to something else, or spend the mobey to copywrite your pictures. It is nice to see that Ebay took them off after the complaints.