Square announced today that venture capitalist Vinod Khosla will join its board of directors. Khosla is already an investor in the mobile payment platform via his venture firm Khosla Ventures, which led Square’s initial financing round and participated in the Series B round last January. Square has raised a total of $37.5 million from Khosla Ventures, First Round Capital, Sequoia Capital and Visa since its founding in February 2009.

Read more, via Forbes.