80Legs: A Web Crawler as a Service

Sounds like they've got a botnet :| Of course, I'm sure it's nowhere near as insidious. But are they piggybacking this on top of some other distributed computing platform or service? Can I contribute (and maybe get paid for my time)?

Edit: Do some basic research, Tim... http://gigaom.com/2009/05/14/80legs-cares-about-your-bandwid...