[Tell HN]: I built a web app for image forensic analysis. Thoughts?

I made something cool, and I just wanted to share it.

There was an article submitted here last month, about forensic analysis of a recent Victoria's Secret photo (Discussion here: http://news.ycombinator.com/item?id=1017726)

It raised my interest, and I thought it was a great article. HN User slig made a quite comment about how some parts of it would be pretty easy to implement as a 'web app'. Turns out he was right. I read up on the theory in the linked research paper, and here is the result of a few days work:

http://www.errorlevelanalysis.com

Any thoughts or suggestions, I'd love to hear them.

I like it, but would like to see something more general.

Copy-move detection would be neat: http://www.lemonodor.com/archives/2008/02/protecting_journal...

Oh, cool. I'd seen that before but I was unaware that the source code had been posted. Thank you for the link.

If the theory is correct, on a cursory glance I'm not convinced, then could you not do a quick analysis to give a numeric likelihood of the image having been tampered with?