N-Gage project, insists that Nokia has a unique advantage: its understanding of mobile communications.

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Although LinkedIn currently has a unique advantage of mixing social networking with recruitment services, the barriers to entry are low.

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Graph Search certainly benefits organizations, but it also has unique, valuable and sustainable advantage to the hundreds of millions of people using Facebook.

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"Reebok has sought to take advantage of this unique, short-lived opportunity by supplying, without authorization or license, Tebow-identified New York Jets apparel to retailers in New York and elsewhere around the country, " the lawsuit said.

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It is with respect to this that practically every individual has some advantage over all others because he possesses unique information of which beneficial use might be made, but of which use can only be made if the decisions depending on it are left to him or are made with his active cooperation.

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Another competitive advantage is the strong brand name, which Zipcar has developed through unique advertising campaigns.

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