Have you ever wondered if someone has used one of your photographs with out your permission? Here is a tool that may just help you find people. Here is a quote from their web page.
TinEye is a reverse image search engine. You can submit an image to TinEye to find out where it came from, how it is being used, if modified versions of the image exist, or to find higher resolution versions. TinEye is the first image search engine on the web to use image identification technology rather than keywords, metadata or watermarks. For some real TinEye search examples, check out our Cool Searches page.
What a terrific idea. Whilst I have no problem with people posting my photos on blogs or other non commercial sites, I do have a problem if they are making profit from my images. If you are the same, check out the link below. Again, I haven’t used this service, nor do I endorse it. This is just a heads up for people interested in it.