When combined with an absence of customer education and a product that lacks the sex appeal of solar, building owners often overlook efficiency reserves as a source of revenue.

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But Muller certainly knows the value of sex appeal as it relates to cars.

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Even without the sex appeal of a quarter-of-a-million dollar category, Pepsi is clearly onto something with its campaign.

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Last September when the New York Jets made headlines for how they apparently mistreated an attractive female sports reporter, I wrote a Forbes SportsMoney piece that examined the use of sex appeal in various avenues within the sports industry.

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It may not have the obvious glamour and sex appeal (or tourist hordes) of, say, Barcelona, but it has a real life that feels very much worth joining in for.

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Members of appeal panels must be trained on the admissions code and related law including the Sex Discrimination Act, Disability Discrimination Act and Race Relations Act.

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Three years ago, the Supreme Court ruled that denying offenders the right of appeal against being on the register was incompatible with their human rights and the law was changed so sex offenders could ask their local police force to remove them from the register 15 years after they are released from prison.

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Add to that the fact that Internet companies with a lot more sex appeal than LinkedIn -- including Facebook, Groupon, Pandora, Yelp and Zynga (makers of FarmVille) -- are all likely to go public within the next year, and you have LinkedIn taking the pole position in what will be a tidal wave of social media companies entering the public markets.

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