Paid online video advertising is picking up speed by the day. Spending on video advertisement is expected to top $1.5 billion in 2008. Decades of broadcast TV has proven that video advertising is extremely beneficial, and online video are no exception. In fact, online video is more targetted than general TV broadcasts, and, unlike TV, cost is determined by number of impressions or clicks, allowing small businesses with limited budgets to advertise on video for the first time.

The business of online video advertisement is still new, and, until it is mature enough, it is advisable to stick with proven and reputable advertisement networks. Networks that are currently running video advetisements include:

Revver.com
One of the first services to offer video advertisement. They tag video ads with user-submitted video, so users viewing the videos will see the ad at the end.

VideoEgg.com
A network of video sites with over 50 million viewers per month. A good place to start for mass advertising.

CNN Videos
Advertise on the news, just like on TV

AdBrite
A website that is specialized in advertisement, offering video ads as well. Another good place to start.

DoubleClick
One of the oldest advertising networks online, with thousands of publishers to choose from

EyeWonder
Ad serving network specialized in in-stream advertising