“If you think developers predict the future then there is more reason to believe that Bitcoin is the real deal. The crypto currency is a hit with developers, according to data collected on GitHub by the founders of Bitcoin Pulse. The data shows that Bitcoin grew by 17.8 percent over the 30 days from November 15 to December 15. In the same period, Paypal grew by 4.4 percent and Stripe by 6.3 percent. Most developers working with modern tools have a GitHub account. They tend to share their projects and contribute to open-source efforts. There are other proof points. Bitcoin APIs are now the third largest category on Programmable Web, which now has 94 Bitcoin APIs. In June there were 46.”
http://techcrunch.com/2014/01/05/bitcoins-future-foretold-by-developer-momentum/