Here’s an idea: rather than sending advertisements to user’s computers, why not send scripting code to calculate [the valuable thing, like, I dunno, pi or hacking the encryption on HDDVD or something] and send the results back to your central computer?
Come on, you know you want to. And it’s free!
erm, was there meant to be a link with this one?
No. Are you saying that someone else could have thought of it already? I find that hard to believe. 🙂