David Wertheimer is an Internet strategist with expertise in online communication, usability, marketing, branding and ecommerce.

David has been bringing brands to the Web for 12 years, stressing user experience and smart site design. He is Director of Strategy for Ai Alexander Interactive, adding focus and vision to front- and back-end web development projects. In his years online, David has been a designer, manager, director, blogger, book author, columnist, educator, and public speaker. Past achievements include creating world-class media websites for The Economist and Billboard magazines, leading 200% growth in online retail sales as the marketing director for Clarins USA, and contract work for a wide range of clients.

David has an MBA from the New York University Stern School of Business and a bachelor's degree from Franklin & Marshall College. He lives in Manhattan with his wife, their son and their dog.

Online since: December 1987 (BBS and ddial at 300 baud)

First wide-access email account: September 1991 (Eudora and Bitnet, pre-Internet)

First instant messaging: October 1992 (BroadCast on Mac OS 7)

First World Wide Web use: March 1995 (Netscape 1.1)

Broadband at home: Spring 1998 (Verizon DSL)

Video on Demand: November 2000 (primitive Blockbuster-Enron experiment)

Career arc: editorial assistant, designer, design manager, design director, usability consultant, freelance information architect, marketing director, strategy director

Preferred gadgets: Apple iPhone, iPod, and laptop; Shure headphones; Denon audio components; Paradigm speakers; XM Radio; Nintendo Wii