Groupon CEO Andrew Mason took to the web again Thursday to announce that the group-discount company will be pulling its controversial Super Bowl ads from the airwaves. Mason said the ads will be replaced by "something less polarizing."

"I personally believe the YouTube view count is the single most important factor in judging the success of a Super Bowl ad," says Tor Myhren, chief creative officer of Grey New York.

What impact can an ad really have? Can it actually make a city feel better about itself? The answer this morning seems to be yes, thanks to Chrysler and Wieden + Kennedy.

Coke loved the spot idea from Hal Curtis, a creative director at Wieden+Kennedy. Just one problem: They hated the ending.

Appealing to our sense of nostalgia, big companies from Coca-Cola to McDonald's to Pepsi try to recapture the magic of classic Super Bowl ads.

This Super Bowl, Mercedes translated its century-old brand to younger audiences through social media--and with the help of tennis superstar Serena Williams, Fall Out Boy's Pete Wentz, and Run-DMC's Rev Run.

A Bridgestone ad that airs Sunday was based on the real, humiliating experiences of a creative at the Richards Group.

All week leading up to the big game, we're revealing the back stories of the most memorable ads in recent Super Bowl history. First up: the eTrade baby tale. "When we first created the baby, we had no idea if it was the dumbest thing we'd ever done or if it was genius," says Tor Myhren, chief creative officer at ad agency Grey. "I was terrified."