Today Google unveiled a +1 button that allows readers to show their support for a Google search result.

The video embedded above explains the upcoming service. What do you think–is it a cool new tool or another thing to worry about online?

Here’s more: “The +1 button is a shorthand for ‘this is pretty cool’ or ‘you should check this out.’ Click +1 to publicly give something your stamp of approval. Your +1′s can help friends, contacts and others find the best stuff when they search.”