The Diablo III website announces that to celebrate today's first anniversary of Diablo III they are rewarding all players by allowing them to play the game less:

One year ago today, the gates of the Burning Hells opened and Diablo III was unleashed onto the world. Since then, millions of heroes have been created, billions of hours have been spent in games, and trillions of demons have been slaughtered without mercy. We've grown and improved a lot since release, both as a game team and as a community, and thanks to your feedback, passion, and unquenchable bloodlust, we expect the next year to be even more epic.

To celebrate this milestone and the community that made it possible, we're giving away free buffs! (Who doesn't like free buffs?) Players who log in to defend Sanctuary between May 15 and May 21 will receive a 25% boost to their Magic Find and +EXP stats. The buff is only available while logged in to the game, but it will apply to all characters as well as stack with other similar bonuses -- the +EXP bonus will stack multiplicatively and the Magic Find bonus will stack above the 300% cap!