I wonder about this. In spite of our extended group (who incidentally include quite a few 19 - 23s as well as older folk) all assuming that the internet was the way to get through, when it came to it this year, almost none of us got a foot in the door, internet-wise.
A mate of mine got my ticket at an internet cafe, but then I got nowhere on the net, and neither did the rest of us, but I proceeded to get through on the phone THREE TIMES in half an hour or so, and bought tickets for several of my mates on the phone.
The "problem" with the internet ticket buying process was that once you "got in", you could buy your four tickets, click BACK, then keep buying more sets for all your friends.
So, I don't know about favouring older people (what? surely most teens are still living at home with parents, who probably pay for a decent broadband...) but it DEFINITELY favoured big groups ALL going, at the expense of people going in ones and twos who couldn't even get onto the server.
Giles..