By Brendan I. Koerner

Your random tweets about Android apps and last night’s Glee are stifling the economic recovery. At least, that’s the buzz among efficiency mavens, who seem to spend all their time adding up microblogging’s fiscal toll. Last year, Nucleus Research warned that Facebook shaves 1.5 percent off total office productivity; a Morse survey estimated that on-the-job social networking costs British companies $2.2 billion a year.