Peter Levine, general partner at Andreessen Horowitz, has been a lecturer at both MIT and Stanford business schools and was CEO of Xensource. Prior to Xensource, Peter was EVP of Strategic and Platform Operations at Veritas Software, where he helped grow the organization from no revenue to more than $1.5 billion, and from 20 employees to over 6,000. He blogs at http://peter.a16z.com .