How to crawl Facebook based on friendship information?

Question

I\'m a graduate student whose research is complex network. I am working on a project that involves analyzing connections between Facebook users. Is it possible to write a crawle

Answer 1

As others have stated, this is typically private information. If, however, Facebook per se isn't a requirement, you could use Google's Social API. A snippet from the Google Social Graph API page: "With the Social Graph API, developers can now utilize public connections their users have already created in other web services. It makes information about public connections between people easily available and useful."

Here's an article on using it in Ruby: http://articles.sitepoint.com/article/google-social-graph-api-ruby-rails#