YouTube's (GOOG) unique users only rose 5% Y/Y to 147M, according to comScore's February data....

|By:, SA News Editor

YouTube's (GOOG) unique users only rose 5% Y/Y to 147M, according to comScore's February data. However, the average time spent by users on the site each month rose 60% to 418 minutes - evidence of the impact made by YouTube's recent site revamp, and also likely its mobile site and apps. YouTube is hoping its efforts to add more professional content will keep its viewing rates and revenue surging.