Github became very quickly developers second home. And why not if you ask me, its well build and well maintained. The github guys, just few days before the end of 2013 are celebrating the 10 millionth repository. Pretty exciting! Here is a quote from their latest blog post:
The first million repositories were created in just under 4 years; 3 years, 8 months and 15 days to be exact. This last million took just 48 days. In fact, over 5.5M repositories — more than half of the repositories on the site — were created this year alone.