Joseph E. Bentzel is a marketing strategy advisor to software, web and tech companies at all stages of their development, and is the author of the book Asymmetric Marketing: Tossing the �Chasm� in the Age of the Software Superpowers. Bentzel began his marketing career at AT&T consumer marketing in the 1980�s. He also provided marketing leadership to OEM graphics technology pioneer Tseng Labs, now part of AMD. Bentzel is focused on providing strategic advisory services to companies in emerging categories, including enterprise security, Web 2.0 communities, and on-demand applications. He maintains a weblog at www.asymmetricmarketing.com, and is the founder of Asymmetri Incorporated, a Silicon Valley-based boutique consultancy.