In a new effort to convert into real dollars the huge traffic of YouTube, Google is trying a new trick. Starting today, YouTube will have a new system of ads through which the users who are watching a music video will be able to buy the song from Amazon or iTunes.

Of course, Amazon and Apple’s iTunes will share the earning with the largest video-sharing site.

According to Reuters, YouTube is planning to extend the ad system to the video games. For example, Spore, the game released by Electronic Arts, is also available to be bought through the new system.

Meanwhile, The New York Times has quoted Bakari Brock, business affairs counsel at YouTube, who said that this move is just the first step to create an e-commerce platform.

YouTube was purchased by Google for $1.6 billion, but so far, this money seems to have gone to charity, since the popular video site hasn’t managed to bring any profit to its parent company. On the other hand, the site has proven to eat out most of Google outgoing bandwidth.

The two things that encourage Google in thinking that they will eventually be able to make YouTube profitable are the facts that there are plenty of people watching its clips and that the company has the luxury of taking its time in finding a solution.

The first ad system for YouTube was introduced last year, in August. The format enables a semitransparent ad to appear on a strip at the bottom of the video and it appears after a video plays for 15 seconds.

If the user who watches the video doesn’t click the ad it disappears up to 10 seconds later. The ad format is non-intrusive because the viewer can click to close the ad right away. In case he chooses to watch the ad, the main video pauses until the commercial stops.

Google CEO, Eric Schmidt, sad in July that the company is pleased with in-video ads. A fair amount of success was also recorded with gadget video, the main reason for this probably consisting in the fact that it enables story telling.

Meanwhile, Google’s YouTube is caught in a legal battle with Viacom, which sued to company last year, claiming copyright infringement.

In May, YouTube owner Google Inc. said that Viacom's $1 billion lawsuit against the company is a threat to Internet communications. Google expressed its concern that such a lawsuit could be considered a direct threat to freedom on the internet. Google’s lawyers are very confident about the defense they managed to build and are ready to take it all the way to the Supreme Court.

According to ComScore, a company that monitors websites, YouTube attracts nearly 300 million users monthly.