Hmm, well I looked up the cost of video advertising and if this three-year-old article is to be believed: http://adage.com/webvideoreport/article.php?article_i

Hmm, well I looked up the cost of video advertising and if this three-year-old article is to be believed: http://adage.com/webvideoreport/article.php?article_id=128516 http://adage.com/webvideoreport/article.php?article_id=12851... then the prices are somewhat higher than I thought -- anywhere from $15 to $100 CPM, or between 1.5 and 10 cents per ad view. I suppose if you were selling at the high end of this range you could fund some reasonable prizes -- how about a one in ten thousand chance of winning an iPad and a one in ten chance of winning a voucher redeemable for a chocolate bar at your local 7/11? At the low end of the range the value proposition becomes a lot iffier, though.