New Delhi: Google has just announced a new browser plugin called ‘Sidewiki‘, which lets you add information to any web page on the Internet.

Install it to your browser of choice, and a little sidebar can be summoned on any page. Adding your own contribution is simple. Type into the box, and there. It’s gone live.

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It’s a potentially useful tool: additional information is a click away, potential shortcomings and inaccuracies can be pointed out quickly, and umm…puzzles and riddles can be solved collaboratively. But this is the Internet we’re talking about. Expect plot spoilers on pages about movies, fanboyism on pages about video games, and the web equivalent of bathroom wall graffiti in the first few days.

For a quick demo of the Sidewiki service see the latest episode of PlayStream, our weekly tech video show.