I've been doing some private research which has involved quizzing my daughters boyfriends on how many of their of mates download games.
The answer was quite reassuring "They all download load of games". My eldest daughters boyfriend has got to restrain himself though as his last months phone bill was £170 (mainly downloads and internet).
I'm an old fart in mobile tech but have downloaded a couple myself.
Further I believe that we are at the verge of a DOT COM type boom in the 3G world. As I have just written on IMG I think people grew weiry of 3G as it never happened, but now it is here. When the reality sinks in and it takes off the "ground floor companies" will grow exponentially. IMHO