"Ask anyone over 25 what digit they use to ring a doorbell and most people will pop up their index finger.
But ask a youngster and they are much more likely to extend a thumb"
other intresting stuff in CES report 63% of computers sold in the US will be mobile .
Sales of netbooks will double from 10 to 20 million .
Go on have a read http://news.bbc.co.uk/1/hi/technology/7822564.stm