Chairman, President & Co-founder of Socialtext, a leading Enterprise Social Software provider. Previously  VP of Marketing for a Fujitsu spinout and CEO of an enterprise risk management software company. Co-founded RateXchange (AMEX:RTX), the leading B2B commodity exchange for telecom, founded an ISP, a web-design company, and has served on a number of Advisory Boards of high tech startups. Mayfield is a former advisor to the Office of the President of Estonia and began his career in the non-profit sector. He is a noted blogger, industry expert, conference speaker. 
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