David Marshak leads Real-time Collaboration and Unified Communications product strategy and planning for IBM Lotus Software, including Instant Messaging, Web Conferencing, VoIP, telephony, and video. He is the product manager of Sametime -- the industry-leading enterprise Instant Messaging and Web Conferencing product. Prior to joining IBM in January 2005, Marshak was an internationally known industry analyst and consultant with Patricia Seybold Group for 18 years. He has appeared as an expert commentator on PBS, CNBC, and on National Public Radio and has lectured on collaboration at Massachusetts Institute of Technology and Babson College. Marshak has been quoted in the Wall Street Journal, Forbes, New York Times, Business Week, and Investor’s Business Daily as well as the technical press.