Says expects to post a fifth straight year of margin expansion in 2013. Sees overall networks ad growth to rebound and accelerate into high single digits in Q2. Says spin off of Time Inc "the right step" for company, stockholders. Sees Q2 effective tax rate similar to Q1. Sees FY13 growth more heavily weighted towards 1H. Sees free cash flow "up nicely" in 2013. Comments made on the Q1 earnings conference call.