"However, people seeing 2012 as some kind of landmark may indeed by totally influenced by multimedia, through selective perception."
Perhaps so, or perhaps not; I'm really undecided on that. Certainly, message boards are capable of spreading rumours, half-truths , memes and misconceptions, (but I'm not saying that the 2012 is a definite misconception), but in amongst all of that there are, nevertheless, some real gems of original thought. Plus, in a broader sense, although a thought or idea may have been stumbled on before, in the past, there's always the chance that someone nowadays has the gift of seeing it from a different, and original , angle. Hope springs Eternal, as they say, lol