Writer for one of the first blogs covering digital signage, other than Bill Gerba's Wirespring blog(s). This blog was started in July 2004 in support of my company, Webpavement, and was heavily trafficked. I got lucky and numerous other digital signage blogs sprung up late 2006 and I was off the hook.
I should note that David Haynes has an excellent blog called sixteen nine.
Also, Adrian Cotterill's DailyDOOH always has fresh content.
I am one of the founders of Webpavement, which was sold to Netkey in Aug 07, right before the recession began in Dec 07. I will blog about digital signage if I feel the need. But, I can usually get a thought or idea off my chest with the 140 characters of twitter.