Another thought is that you can create the image, then post a cropped version. At trial, you can produce the original uncropped and you will have something the scoundrel doesn't have. You can copyright a page with several images if you like. That saves a bit on the fee. www.mrtrademark.com has a copyright service. I've used Joe Straal for trademark before and am quite impressed. General copyright law and intellectual property gives you right to your art without the paperwork, however, with the paperwork, you have a stronger enforcement claim. Also, you and your estate can renew the copyright several times and keep it in the family after you are gone (for a while). I have digimark but haven't used it much, thanks for the feedback. One other thing isto post a reduced pixel version of the image. In the case of my sister's site (www.annsartgallery.com) and mine (www.annsartgallery.com/ericwebs.html) we decided to go with thumbs only, but that has its limitations which aren't working well for us. Good luck. The real issue is finding and tracking down the infringement people.