There is a movement afoot to make cellphone use legal on airplanes. In concept I like the idea because if I am going to be stuck in a flying tube for a few hours it would be nice to have another distraction.
In practice the idea scares me. I hate the idea of being forced to listen to hundreds of people talking at once. It sounds like a perfect way to cause trouble. Can you imagine what the noise level will be like, especially since so many people yell into their telephones.
In the same vein I have no problem with the idea of using other devices that can be used quietly, such as Blackberries.