-At its MIXX Conference today, the IAB unveiled a study that says employment in the ad-supported internet sector has doubled over the past four years to 5.1  million and contributed $530 billion to the U.S. economy in 2011 alone. link

-Meanwhile,  -ZenithOptimedia has reduced its global ad spend forecast, predicting 4.6 percent growth in 2013, reaching $525 billion by the end of the year.

-Domino’s is digging Facebook’s new ad exchange. link

-The Hip-Hop Hall of Fame is in final talks with ad agencies and marketing firms this month to select the winning firm to manage the Hip Hop Hall of Fame Museum and related multimedia divisions, $100M national & international naming rights, official category sponsorship negotiations, activations as well as campaigns from 2012-2017.

-$1 million in USA Today ad space is up for grabs in the newly redesigned trade’s 2012 Print Ad Competition, which will be judged by the likes of Ty Montague, Chuck Porter and Droga5 CEO Andrew Essex. link

-Samuel L. Jackson has joined Sarah Silverman & Co. in campaigning for Obama, pure Samuel L. style. link