The world's biggest yellow pages publisher, Yell, has threatened to shut down Yellowikis, the wiki-based yellow pages directory, accusing it of of "misrepresentation", "passing off" and suggests that using the name Yellowikis could "constitute an 'instrument of fraud'. It's contacted Yellowikis co-founders Paul Youlten and Rosa Blaus (his 15 year-old daughter) demanding they shutter the website, transfer the domain names to Yell and agree to pay damages to Yell for