"We already know that anonymous letters are despicable, " says Miss Manners columnist Judith Martin.

CNN: Test your e-mail etiquette

The attacks came from anonymous IP addresses so we are unable to determine the source.

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"We are concerned about the continuing gap between anonymous reporting of incidents in the Armed Forces Continuous Attitude Survey and the Recruit Training Survey and the actual numbers of complaints, " they said.

BBC: Armed forces complaints procedure needs change, MPs say

We prefer them because they are predictable, reliable and anonymous.

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We are going to use this information internally for any lawful purpose and we will share on an anonymous basis this information with third parties, which will use it for any lawful purpose.

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If we are to believe the reports published this weekend by three of America's leading newspapers (based on multiple if anonymous sources and semi-confirmed by top intelligence officials), the latest NIE concludes that the war in Iraq is fanning the flames of global terrorism and creating new enemies for the U.S. in the world of Islam.

NPR: U.S. Iraq Policy: Going Down on One NIE?