Google has announced their much-anticipated contextual video ad program. Ads will be displayed as static images, but clicking starts a video with fast-forward, pause, and volume controls. A separate click takes the viewer to the advertiser’s site.

Now’s a perfect time to jump on those video podcast sites and download the tools you need to turn your ads into eye-magnets. You can bid for play in the same way as usual (CPC or CPM) and geo-target locally, nationally, or internationally. So, brush up on the version of English the other country speaks, too.

When you think about content, consider that teens are more graphically and video oriented than adults and they represent between 12 and 15 million shoppers in the U.S. alone. (James Maguire has some excellent tips for designing your site to attract and appeal to teens, here at e-Commerce-guide.com.) The one thing above all else to remember is: keep it interesting. Teens bore easily.

And what’s one of the top things teens buy online? Music, of course. With a cell phone in the hands of nearly every teen, you have an opportunity to direct them to a merchant that allows users to download their favorite tunes. And they’re more willing to pay to download to a mobile phone, than any other service. At $2-3$ a pop for a mobile download, the dollars can add up fast.

Online retail spending is expected to rise to $211 billion in this year ($138 B, excluding travel), and a significant chunk of that will be in music sales. Download some money.