Citigroup analyst Mark Mahaney polled Web users last week and found that most (69.2%) depended on YouTube for their video watching, though 9.8% listed iTunes as a source for their online videos, reports “All Things D” (

FaceBook tallied 27.1%, Netflix 24.5%, Hulu 22.5% and Amazon 7.3%. As Mahaney notes, these numbers also point out just how much potential YouTube has if it ever gets serious about pay-to-play video. Mahaney is also a bit puzzled to see how prominently Facebook figures in his survey, says “All Things D.”