The latest draft requires troops to pull out by June 2011 unless invited to stay by Iraqi leaders, officials said.

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It is opt-out, of course, because an opt-in to browser tracking would require universal cooperation from all industry players to stay out of our computers unless invited.

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And if you're a contractor or part-time employee, don't show up to the party unless you are specifically invited by your immediate supervisor.

WSJ: 'Don't Cleat the Boss' and Other Tips to Manage the Summer Office Picnic

The U.N. was not formally invited and usually does not attend the ceremony unless someone from the organization wins the award, the official said.

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Similarly, if invited for dinner at 9pm, showing up half an hour late is fine, unless the host specifically requests punctuality (in which case arrive around ten past).

ECONOMIST: Gulliver | The