According to AdAge, the nation’s 100 biggest advertisers boosted 2011 total U.S. ad spending by 4.8%. The bump in ad spending is attributed largely to digital media including search, video, and social media. The internet is expected to surpass newspapers this year as the nation’s second-largest advertising medium, behind TV. An interesting piece in this article speaks to the increase in both measured media (display advertising, including display ads on social-media sites) and unmeasured media (paid search, online video and mobile ads). Can you measure the so-called “un-measurable” media?