Venture capital's best-connected angel manages portfolio of 125 venture investments. Currently loves consumer Internet plays, such as Twitter (microblogging), Digg (social news aggregation) and PurePlay (online poker). Serves as an adviser to networking giant Facebook. Past successes include Google, PayPal, Tellme and Photobucket. Active philanthropist; devotes time to San Francisco Homeless Connect and the Ronald McDonald House. Ron was previously with National Semiconductor Corporation in marketing positions from 1973-1979, and Altos Computer Systems as a co-founder, President and CEO from 1979-1990. He eventually took Altos public in 1982 and served as CEO of Personal Training Systems (PTS) from 1991-1995. PTS went on to be acquired by SmartForce/SkillSoft.