An American businessman, entrepreneur, and angel investor. He is a general partner at Founders Fund, and has held executive roles at PayPal, LinkedIn, Slide, and Square. His most notable angel investments include: YouTube, Airbnb, Plantir, Eventbrite, Lyft, Quora, Yammer, Skybox, Counsyl, Weebly, and Wish.
Keith Rabois is an active contributing member to Quora (he invested in QuaraQuora with Khosla venturesVentures). As of July 2019, he has 41,000 followers on Quora, and has answered 539 questions on Quora that have been seen by approximately 5.9 million people., In 2013 he was awarded the designation of 'Top Writer' for his contributions to the Quora platform.