Participants frown upon late arrivals, and some data-obsessed engineers have even computed the costs of tardiness.

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Sufism is a mystical dimension of Islam considered offbeat by Islamic hardliners, who frown upon it.

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And then there are those who frown upon the notion of office romance.

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Not surprisingly, Big Food are savvy marketers, and Facebook and Twitter let them get away with making claims that even the EFSA would frown upon.

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Many employers frown upon them.

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Finally, the bowl-shaped device comes with a "ceramic-style" finish to complement your mantelpiece, from where it can frown down upon cheaper, fatter alternatives like Toshiba's Canvio Personal Cloud.

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