The contest rules say a person may cast only one vote per day.

WSJ: College Football, BCS: Another College Football Voting Controversy

"This is only one small egg per day, " says Buijsse.

CNN: Daily chocolate may keep the heart doctor away

There are usually only one or two buses per day from Wuyuan to the villages, so be prepared to spend the night in a local's house once you arrive at your destination.

BBC: Rural adventures in China��s backcountry

But the Liberal Democrats say the permits are virtually "worthless", only offering two one-hour slots per day.

BBC: Weston-super-Mare street parking charges set for October

The Java-2 based application server could handle as many as one billion hits per day when only Java-basedbrowsers were accessing the server.

CNN: Sun unveils app server strategy

About two in five older men only have one or two face-to-face conversations per day.

BBC: Many elderly isolated from far-away family, charity says

Note that I only considered stocks that were trading at least one million shares per day.

FORBES: Stocks With Charts To Drool Over

The IRS has announced that as of May 21, 2012, it will issue only one employer identification number (EIN) per responsible party each day.

FORBES: IRS Imposes EIN Limits

Only one entry is allowed per listener per round of the competition (scheduled to be two per day).

BBC: The Eavesdrop: Terms & Conditions