Study of ~1.3 Billion URLs: ~22% of Web Pages Reference Facebook

He did this in from idea to finished experiment in 4 days and used about 300 lines of Ruby. Strong demonstration of how low the barrier can be to working with big data.

"The key lesson I’ve learned from the exercise is that given the tools and data available today, either for free, or at very low cost, it’s possible for anyone to work with relatively Big Data without too much weeping and gnashing of teeth."