Social Networking Losing It's Cool?

Found this on the Guardian:

"Young Abandon Social Networking Sites"

Makes interesting reading. Will we see a new move in Web 2.0? The bit that interests me is the statement intimating an older generation adopting youth signifiers. These signifiers, from skinny jeans to FaceBook, were not invented by the 15-24 year olds. On the contrary, the circular nature of fashion and taste has seen the reinvention of fashion, music, etc that is still relevant to the generation it was created by initially. Fashion-wise, the generation growing up in the 80s and 90s appropriated hoodies, ripped jeans, the lumberjack look, skateboarding, surfer style as signifiers of that given era. Music-wise, we are seeing a move away from the reinvention of disco, soul and funk that was house to a newfound appreciation of classic rock .... and not just in terms of new bands appropriating the sounds of Zep, AC/DC, etc, but there's even a reinvention of prog and a new audience for all the original bands who are newly prominent on the stadium circuit. And, yes, these are musicians in their 50s and 60s!

My point? Well, my point is that we must be clear that demographics have changed from being age-related to lifestyle. Those of us in communications (from advertising to the media) apply this thinking, but it appears that other commentators are still stuck in another era.