Yeah, I'm with Trisha. It's not suprising that kids play online. Thank God they can play somewhere. It might be the least structured place kids have to be kids in this highly programmed childhood of their's.
Plenty of adults play online, too. Have you heard about 2nd Life? I heard an NPR story on it a few weeks ago and wanted to bring it up in class. Google 'Second Life' and take a look. It's a virtual world where the game designers actually SELL virtual property to people for development. Your 'Avitar' may interact with others (in most ways imaginable) and players themselves have developed 'niches', whereby they design homes for people and the like. Sounds like a HUGE chunk of time to devote to cyberplay.
No wonder I never hear from friends anymore. They're out living in cyberspace.