Too old for networking?

Got the feeling this journo was suffering a bit of techno-fear.

'I have tried to find anyone I know on these sites - but nobody seems to be there'

It does highlight the boundary between current users and the mass market. Most of my initial twits came from my flickr friends where I recognised their twitter images before their names (there is a confusion of real names & user names with twitter). So if you don't have your current friends there and you don't/can't make new meaningful ones what is the use of using it?

'... "Up at dawn, back hurting. read the Guardian online," is the thrilling news from TopDoc. ...'

That is the crunch of the argument. No compelling use. Yet the same person is probably spouting out twit like messages all the time to people around him in the office . Twitter is just an extension of this using the phone or computer.