Wow, I've been working on this puzzle for a while with one of my buddies. It involves a little bit of computer knowhow, but it's definitely doable. I'm currently on number 18...
Anyway, the puzzle can be found here
Just so that people aren't totally lost right off the bat, you put your answer into the address bar (in the appropriate place, of course.) Try answers out, you can get hints to help you along.
I figure if people are actually interested in this, we can get some good collaboration going on. Good luck to any who undertake this!