Everybody at last week's Mobile World Congress in Barcelona wanted to be the new best friend of the social networks.

From the world's biggest phone maker, Nokia, to tiny Irish semiconductor start-up Movidia, delegates to the wireless industry's biggest annual gathering couldn't stop talking about Facebook, MySpace and Bebo.

The majority of visits to such online communities are still made by people sitting at a computer telling their friends where they are and how they are feeling, exchanging opinions on their favorite movies and music or uploading videos.

But the spontaneous and personal nature of much of that communication lends itself perfectly to the mobile phone.

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