One thing is clear though: The amount of content being published across the globe is increasing at an exponential rate, as the tools mature to the point that it's become a trivially easy activity. And a likely response to that is increased sophistication in the tools that do the job of finding content of relevance and delivering it to the individual - not based on self-selection, in the way that RSS and portal technology dealt with the issue in the past, but based on a contextual understanding of the individual's preferences, role, habits, location... psyche, emotions, purchasing preferences... It just isn't possible for a person to manage this effectively - and it is possible for algorithms to do a much better job. Commercial organisations are already exploiting this capability... how do you think Amazon works out what to entice you with? And did you know that it may adjust the price of that irresistible DVD box-set based on what it knows about you?
Science-fiction writers have been depicting a world where the machines have taken over since the Industrial Revolution. No desire to spoil anyone's Sunday lunch - but we need to come to terms with something: They already have.