No to advertising, yes to business add-ons

Vowing not to charge users access fees and to avoid placing ads on Twitter may not seem the best way for a web start-up to make money, however the men behind Twitter plan to do just that.

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The latest of the social-networking phenomena, Twitter last year turned down a $500million buy-out offer from competitor and social-network behemoth Facebook. Now, looking to turn its ever-increasing user base into ever-growing mounds of cash, the leaders over in Twitter land have been putting their heads together.

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