[cmer]

A successful business doesn't mean they're not a startup anymore. Dropbox is hugely successful, but definitely still a startup and its infancy.

Github will remain a startup until they can make a dent in the big boys' bottom line, for example: Perforce.

Github is insanely successful amongst startups and hackers, but has yet to significantly penetrate the enterprise. Hopefully this will change (for us and for them) because their product is a gazillion times better than anything else out there.