Quick-serve chains spread the green via #GooDDLuck and #Shamrocked.
Taco Bell, Dunkin' Donuts, Quiznos, and Red Robin give Plink a whirl.
Many businesses need to better understand why they're investing time and money in social media.
Prepare for 2012 by assessing these innovative campaigns that tapped Facebook apps, iPad ads, and geo-social buys.
Foursquare and Facebook Places anchor New York-area promotion.
A Dunkin' Donuts customer doesn't cry over spilt coffee - but tweets about it. A lesson for marketers.
Yahoo appears to have become the first Internet giant to run Facebook.com ads.

June 6, 2012
1:00pm ET / 10:00am PT