http://www.hostmysig.com/data/dave420/bah.JPG
(or http://www.valhallalegends.com/spht/images/obvious-cdkey.jpg incase he decides to update/delete it)

The screen shot was originally taken to show that a program is backdoored. He decides to hide his CD-key by blocking out certain bits of it, probably to show that his CD-key is there but not to actually give it away. He blocked out numerous different numbers in each instant of the CD-key, making it extremely easy to get the text.

Thanks for the free CD-key!

Or, if I'd done it, a bait to have someone do what you just did :P