[0x12]

Very large numbers of Amazon servers are used for something else than cranking out HTTP pages. Expect a lot of them to be crunching numbers for bio-informatics problems, physics simulations and so on. That's why there is a CUDA enabled instance.

Rendering web pages is actually one of the worst use cases for Amazon from a bang-for-the-buck perspective, especially when you factor in bandwidth.

[samstave]

Crawl and multiply by 3 (assume that 30% are direct web servers)

[nl]

Is that 30% based on anything at all?

When people are building 30,000 core compute clusters [1] on EC2 - presumably with zero publicly available web servers, I'd be very interested in any methodology that provides reasonable estimates of revenue based on public web servers.

http://arstechnica.com/business/news/2011/09/30000-core-clus...