GOOGANTUA has added another couple of advertising revenue streams to its already all-pervasive stranglehold on the Internet's ability to turn a quick buck.

From now on, that quick ten minutes of casual Internet gaming you sometimes grab in your coffee break will be festooned with nagging adverts for everything from new movies to the latest game releases, thanks to Adsense for Games.

With over 25 per cent of users playing online games every week – that's over 200 million users worldwide – Google is trying to persuade online game developers to include pop-up ads as interstitial frames before a game, after a level change, or when a game is over.

According to an official Google bog, "The AdWords team will sell your in-game ad placements directly to top brand advertisers, and you'll also see contextually targeted text and image ads based on content and demographic information. In addition, you'll be able to control the ads you see on your pages using our filtering options."

But to become part of the system and start earning some revenue you'll have to meet a few requirements. Eligible publishers must submit an application, and have an existing online game with a minimum of 500,000 game plays with 80 per cent of their traffic from the US or the UK.

The company has also announced that it will soon be adding click-to-buy links to Youtube, allowing users to purchase songs and video games mentioned on the site.

The links, which will first appear only on the US version of the world's most popular website, will go directly to other commercial portals including Amazon and Apple's Itunes Store.

Moves are also afoot to embed advertising into user-posted video clips, which will almost certainly put a few backs up. µ