d-null

I was wondering what the future looks like as far as the upcoming potential online customers, mainstream and adult (ie. the typical 14 to 17 year old that will be 18 and with a credit card in the next few years)

how many of that generation use facebook at all?
what percent spend time on forums or other sites that they find by google?
how many use gmail or hotmail type emails and check them every day?
how many hours average per day would they be online, and how would that breakdown for time spent playing games, social networks, research, reading other types of sites, etc