I AM the photoshop demigod.
Speaking of theft there is a really cool tool called TinEye that searches the web for exact replicas (or close matches) of images. If you are a bit paranoid or bored you can always check it out http://tineye.com/ . It only has 701,666,310 images indexed but that should grow in time. They even offer a Firefox plugin!
Dont expect an invite in the immediate future, ive been waiting for months!!
Edit: It works well, I found that some ass nicked my Reventon signature image on some Italian forum.
http://peb.pl/908292-post18.html
And some other guy nicked someone else's reventon photo to make a signature
I AM the photoshop demigod.