The Ticker: Nike + Michael Vick; @VP; ROI of content; Google+ & Zuck; ‘Obama is Dead’ hoax

AdAgeNike Re-Signs Michael Vick to Endorsement Deal

TechCrunchU.S. Vice President Joe Biden (@VP) Joins Twitter

MashableHOW TO: Measure the ROI of a Content Marketing Strategy

International Business TimesGoogle+ Update: Zuckerberg Joins Up, Scams and Exploits Abound

AllTwitterTwitter Tight-Lipped On Fox News Hack As 10 Hours Pass Before ‘Obama Is Dead’ Tweets Are Removed