Alan Kay recommended it. He kept bringing it up. I finally read it last week. It's awesome. I think you can apply what people did with the TV to how people use social media: a series of interruptions.
Someone posted the pdf of the 20th anniv. edition. Google: Amusing Ourselves to Death pdf
It could be depressing as well, since the described effects correspond to the erosion of many important public institutions (like democratic governance).
Seems like this decade is a good time for an update on this issue, now that entertainment technologies are ubiquitous and totally attention grabbing, and cognitive psychology gives it good scientific grounding.
Someone posted the pdf of the 20th anniv. edition. Google: Amusing Ourselves to Death pdf