Here are some fascinating bits of statistical news you might be interested in…
US Mobile Advertising Forecast

$1.4 billion – size of mobile ad market in 2012
$2.1 billion – a-sponsored directory assistance calls in 2012
91.7 million – number of mobile internet users in 2012

Source: The Kelsey Group
Percentage of US consumers that use social networking sites

Teenagers (12-17): 47% [...]