Marketeers convened this week to figure out what the best way is to reach teens thru the internet. The answer in short: "The mobile phone"!

Teens spend their time mostly online, gaming or with cell phones and the prediction is that mobile phone usage will surpass the popularity of the desktop computer. It is only a matter of time that most people will get a smartphone for themselves. Geographic ad targeting will probably explode the coming years. But it won't be the providers that will be entertainment leaders on the phone, other companies such as google, apple or yahoo will be more effective in doing so.

source: cnet