You know all that online video we are watching, well it is making for more advertising inventory to sell. So, thanks to an article from Wendy Davis, we can quantify it a bit better.

RESEARCH FIRM EMARKETER NOW PROJECTS that ad revenue from online video will reach $775 million next year -- an upward revision from its previous estimate of $640 million. By 2010, online video ad spending will soar to $2.9 billion--or 11.5% of all dollars going to online ads, according to a new report released Monday.

Bonus points to anyone who can guess WHY the figure was revised upward? Ding, ding, ding. Yes, "eMarketer Senior Analyst David Hallerman attributes much of the growth to Google's recent $1.65 billion purchase of YouTube."