Mark Cuban Fined for Tweet

Mark Cuban fired off what you might call one of the most-expensive tweets ever.

Saturday, the outspoken billionaire owner of the NBA's Dallas Mavericks posted a message on Twitter saying he has "failed miserably" in his attempts to "fix officiating" in the pro basketball league.{}

The NBA fined Cuban $50,000 for the tweet, as part of its policy against publicly criticizing referees.{}

This isn't the first time for Cuban,{}he's paid millions of dollars in fines over the past 13 years for crying foul on NBA refs.{}

According to the Mavs' website, Cuban matches every NBA fine with a personal donation to charity.{}