He's a geek, startup investor, former software developer & entrepreneur, occasional tech blogger and internet marketing nerd. He's the founding partner of 500 Startups, an Internet seed fund and startup incubator that has invested in ~400 companies all over the world including Twilio, SendGrid, TaskRabbit, and Wildfire Interactive (acqd by Google in 2012).   Previously, he managed early-stage internet investments for Founders Fund (2008-2010), and also ran the Facebook fbFund incubator program (2009). After leaving PayPal in 2004, Dave was an investor/advisor in ~15 startups including Bix.com (acqd by Yahoo in 2006), Mint.com (acqd by Intuit in 2009), Jambool (acqd by Google in 2010), TeachStreet (acqd by Amazon in 2011), and SlideShare (acqd by LinkedIn in 2012).   His professional expertise: tech startups, venture capital, product management, internet marketing, business metrics, community evangelism.