Thank you -- I was about to ask the same question.
*boggles*
Blocking isn't the answer. And I too will not go to a theater that uses it.
Not at all. These jammers don't block the signal, they transmit a signal in the moblie spectrum reserved for control signals between the phone and base tower. The phone just displays a "no signal" message. They also enable configuration of "live spots" in certain areas in the dead zones, allowing professionals that have to have communication access to mobiles.
Instead of making a knee-jerk anti-free market post, why not just read the article and discover that the theaters are asking the government to remove the government barrier to them running the business the way they see fit?
You are absolutely right. The theaters owners trying to block cell phone signals are no different than the "zero-tolerance" policies seen in schools. In their minds, it's simpler and less painful to ban all signals, rather than policing their own premises for patrons disturbing other patrons by using cell phones, talking, screamin babies, etc.