I see it as our brains adapting to the information overburden that we feel is being imposed on us. As a result, those learning to adapt are creating four categories of information: (1) Stuff I need to know (2) Stuff I should know (3) Stuff I'd like to know (4) Stuff I don't care about
Content shortening/summarization helps augment our ability to quantify what fits into 2, 3, and 4. If I read the first paragraph of a traditionally written journalistic piece, I know where it fits before the second paragraph. But a precious small percentage of online content is written in that manner -- first paragraph giving the reader enough information to know what to do next. (There's a whole rant on our lost ability to write, but that's for later.) So since a smaller and smaller percentage of potentially viable information is written traditionally, automated summaries (should) help us decide sooner where something fits.
Does that make sense or am I just spewing madness?