Ooh interesting! Finding plagiarism is one of the hardest parts of controlling it... and so it would be awesome if there was a way to automate so e of that work.
Also, great idea to use some kind of watermark or personal logo. I can see how that could help deter some people from stealing.
There is a bot cheetah that does this check no?
its okay... it happens... you should feel honored...
Sad but thats the truth...
All the best for the rest... i hope they dont get stolen :)