I wonder if, presuming that in the future an ever-increasing number of people will be blogging, twittering, and otherwise communicating more richly online (hopefully not too much less richly offline), people and society might come to have both a deeper "theory of mind" and come to present levels of it earlier on average - will we see blogs binding a family together? (and how much of the actual content of that will be "passive-agressive" sniping?) Both the possibility of the soapbox and the opening of doors seem to be there... I've seen a lot of people playing mmorpgs with their kids (perhaps replacing Monopoly, Tri-ominoes, and other physical games families played) - a key difference here is that for games that are inherently more socially open (that is, one doesn't need to visit the family house to join in), perhaps we'll start to see the barriers between generations break down - if the parents get their paladin and ranger to join the kids on the cleric and thief to go fight a dragon, and maybe a few friends of the kids (or parents) join in, society might become more tightly bound in some ways.
Wondering as well how much musical taste has to do with broad philosophical stances - do mathy people like mathy music? Does astructural music appeal particularly to hippie folk?