Is that the, "This is your brain on Google" discussion or something else?
http://www.youtube.com/watch?v=NhLnoZFCDBM
Browsing the supplied links (with the OPs redacted in many of them, so not all that helpful), it seems to be more about the specifics of screen reading as opposed to the idea of rich media/multi-tasking/non-linear reading in the "Brain on Google" quip.
What's interesting is that the researcher behind the Brain on Google study has retreated from his original position that more brain activity is good to something more conservative, stating, "We just don't know,
maybe- for reading- it's like golf... the less activity the better." (I would've preferred a computer algorithm metaphor but whatever)