I think it's pretty awesome that you can fire up less than a movie ticket worth of computer via credit card and process something you'd never have a ghost of a chance to do on your desktop in a reasonable amount of time. And then do it again the next day. And the next day. Repeat until you have some useful output.
$10 gets you ~ 1000 hours on an EC2 Micro spot-instances. !!!!
Big data is a minefield of opportunity. Do go walk in it.