Kleiner Perkins Caufield & Byers announced this morning that it has established a $250M social fund. Focused on investing in entrepreneurs in the social space. As part of the announcement, made at Facebook, Kleiner Perkins Caufield & Byers said it had invested in Cafebots, Flipboard,/b>, Jive Software, and Lockerz. KPCB's sFund will be headed by Bing Gordon, former Chief Creative Officer of Electronic Arts. The new sFund is being funded by Amazon.com, Facebook, Zynga, Comcast, Liberty Media and Allen & Company, LLC.