According to new data Netflix released today, its 20 million subscribers consumed 2 billion hours of streaming TV shows and movies in Q4 '11. Using simple averages, that would mean each subscriber streamed 100 hours during the quarter, or approximately 2,000 minutes per month (about 33 hours). That's roughly 4 1/2 times the level of YouTube's time spent/viewer. According to comScore, YouTube, which dominates total monthly volume of online video, had approximately 151 million U.S. users in November, 2011, who viewed 444.5 minutes each, on average.Categories: Aggregators, Research