Picture tracking and watermarking

I just came across this company that seems to have a pretty good product. Have any of you heard of it or used it?

This year will be the first time I actually try to take photos of my snakes and archive them, make them available to the general public to aid in selling my babies and also to get word about my site out to folks who don't know about it. I'm curious if this works or is easily disabled.

http://www.digimarc.com/mypicturemarc/default.asp

Thanks in advance

this here is freeware.... i think shrap sent the main link but here is the waterwarking program
http://www.watermark.studigotchi.com/index.htm

here is the freeware main page
http://www.pricelessware.org/thelist/index.htm

Actually I believe the photo gallery here has the capability of automatically watermarking every photo posted on it. Unfortunately, however, it would have to be a watermark image for this site rather then individual personal marks. But any graphics program that can work with layers should be able to do this function for you.

PHP has this feature built in.... anything above version 4.3 anyway (which is likely how this website has the capability). take a look at php.net if you're interested.