President Carter's legislative team made a series of mistakes such as failing to give Speaker Tip O'Neill a sufficient number of invitations to the inauguration and not informing Democrats about when the president would visit their districts.

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If you give up on tablet writing, you can replace the tip to convert the pen to an old-fashioned roller ball.

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"We had somebody come into Tikrit, the 1st Brigade, and give us ... a tip to conduct a raid on a house south of Tikrit, which we conducted last night, " Odierno said in a video teleconference from Baghdad with reporters in Washington.

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One tip could be to post the approximate value of the gifts you give to investors who help you raise capital for your venture, that way anything above that figure would be considered a gift.

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So we've done the legwork for you, talking with concierges, tourist boards, and other travelers to find out the real protocol on when (and when not) to reach into your wallet and how much of a tip you should give to waiters, sky caps, maids, doormen, and cabbies all over the world.

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