This is wonderful. I'm totally gonna use it and contribute to it on a long flight tomorrow.
You can always tell a good idea when it gets your gears turning. With the sort of database that you'll be building, you could experiment with different visualization strategies and hyperlinking between cheat sheets!
A simpler task for version 1.0.1: Make sure that formatting is cleaner on the generated PDFs. For example, on this cheat sheet there is one hanging row on an otherwise empty pp2
http://www.cheatography.com/davechild/cheat-sheets/javascrip...