Youtube is the largest video sharing site to date, with the most traffic and the highest amount of users on it making Youtube the definitive place for getting your videos published and marketed on. I have put together a guide on Youtube marketing for videos and I think you all will get a lot out of this.
Youtube is the second highest trafficked site globally according to alexa. Quantcast estimates 60 million unique viewers per month with a community base of predominately gen y viewers. Emarketer surveys recently did a research document on video viewer ship according to age and what they found is that the gen y generation views about 5-6 hours per day. The household incomes of these viewers are all pretty even from 0-100k +.