Take note, Twitter: Not every tech company has a happy ending after a ballyhooed IPO.SEE MORE: From the December 03, 2013 issue of Variety Just look at Demand Media, the Santa Monica, Calif.-based firm some thought would revolutionize content production. Not long after the company went public in January 2011, its market capitalization soared to more than $2 billion, sending the then-5-year-old firm’s value briefly past that of the New York Times Co. Continue Reading