Pay as you go web hosting

Interesting concept. They don’t work with long running processes like Django or Web2py, but it could be good for static files and regular scripts.
NearlyFreeSpeech.NET FAQ
What happens if I get slashdotted?
A
“major slashdotting” of a site hosted on our service will cost you (on
average) less than $10, one time. The best part about that is [...]