A release, a leak, and a tweet

The White House this afternoon announced three events on President Obama's schedule -- two in the usual ways for Washington, and one via a new web tool.

White House press secretary Robert Gibbs issued a statement that Obama will go to Mexico next month: "The President will travel to Guadalajara, Mexico, August 9-10 to attend the North American Leaders Summit with Mexican President Felipe Calderon and Canadian Prime Minister Stephen Harper. The summit meeting will provide an opportunity for the United States, Mexico, and Canada to engage on a broad range of issues, including economic recovery and competitiveness in North America, our shared interest in energy and the environment, and cooperation among our governments to promote the safety and welfare of our citizens, including continued close cooperation to counter the A/H1N1 influenza pandemic."

The White House leaked to the Associated Press that Obama will host the Apollo 11 crew on Monday, the 40th anniversary of man's first landing on the moon. "A senior administration official confirmed the plans to The Associated Press on condition of anonymity because they had not yet been announced," it reported.

And, for the first time ever, the White House used the social networking site Twitter to announce a primetime news conference -- 9 p.m. on Wednesday. "Primetime presidential news conference at the White House, Wed. 7/22 @ 9PM EDT,” the tweet said.