Andreessen Horowitz, to the tune of $15M. Rap Genius was also a part of YC S11.
http://techcrunch.com/2012/10/03/andreessen-horowitz-iinvest...
http://techcrunch.com/2012/10/03/andreessen-horowitz-iinvest...
As an aside, your comment is very patronizing.
Downvoted for at least a triple non sequitur and not adding anything on topic, except for an attempt to derail it into yet another discussion about the thing that must not be.
GitHub had some serious HR issues and internal mismanagement.
Rap Genius has an entire brand, emphasized through every public appearance, of utter douchebaggery.