But for Pinterest, three months after its launch in March 2010, the visual social bookmarking site has only 3, 000 users.

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For the first time, the site has seen more visits than "social bookmarking" site Digg, which allows users to share links to sites.

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Following news that Yahoo was laying off about 600 people, BusinessInsider reports that the internet giant is shutting down Delicious, a social bookmarking web site.

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"The second you start looking to be 'cool, ' you're dead, " says trendsetter Kevin Rose, the tech whiz behind a host of "cool" products, including social-bookmarking Web site Digg and online video network Revision3.

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