Google Cache links use checksum of the first 8 characters in the earl

I was looking to see what people were looking for as they reached my blog searching for “KCYap Wife” when I noticed something interesting.

This:
http://72.14.203.104/search?q=cache:CT71ZmX0u3UJ:kcyap.com/wordpress-16-theme-design-competition/how-to-participate/%3Fp%3D126+kcyap+wife&hl=en&gl=us&ct=clnk&cd=4

truncates back to this:
http://72.14.203.104/search?q=cache:CT71ZmX0u3UJ:kcyap.co

without any changes to the output. That means that all of the rest of that stuff is just Garbage. I’m not quite sure why that’s important. I think Google must use that as a check sum in there. It’s definately not a Rot13 or md5 or anything like that. So I think it is a 2 hex char checksum. I’m not sure what use it would be even if someone cracked the cache indexing key. But it’s interesting none the less… in a Code Cave sort of way…