Carl Mercier is co-founder at VarageSale, a mobile platform for buying and selling with neighbors, backed by Sequoia Capital and Lightspeed Venture Partners. He was previously founder and CEO at Defensio, a security suite for the social web. It was acquired by Websense Inc. (Nasdaq:WBSN) in 2009. Carl holds degrees in business management and sound engineering. He currently resides in Toronto, Canada.