Cutting the amount of people who possess the code in half...

[BWMASTER]

That would be a cool Idea, like trading your source files for a demo of HL2...lol

EDIT: new idea....how about releasing the game or just something through steam that scans your computer and deletes all the files with the source names and sizes. Including the 31 meg rar file.

If people illegaly downloaded it why shouldn't valve illegaly delete it.