ESS Technology, Inc. today announced the appointment of John Marsh, ESS's Corporate Controller, to the position of vice president and chief financial officer. The appointment is effective immediately.

http://www.esstech.com/.

PodTech Network, Inc., an online video network featuring original technology and digital entertainment programming, today announced the appointment of James McCormick to CEO. John Furrier, the founding CEO, will continue to serve on the board of directors and lead efforts to develop new products and revenue models to support the growing demand for online video and social media based marketing.

Vyyo Inc., a supplier of broadband access equipment for cable system operators, announced today that Jeff Fryling has been promoted to the position of senior vice president, business development. 

http://www.vyyo.com

Dave Sifry, founder and CEO of blog search company Technorati, has stepped down from his post according to an entry on the company blog. The resignation is effective immediately; he will remain chairman of Technorati's board. Meanwhile, CFO Teresa Malo, vice president of engineering Dorion Carroll, and vice president of marketing Derek Gordon will jointly run the company while seeking a new chief executive.