How costly is free speech? For Marc Cuban, owner of HDNet and the Dallas Mavericks, the price tag is at least $100,000. That's the amount Cuban was fined yesterday by the National Basketball Association for comments Cuban posted on his blog that were critical of NBA officiating. That fine was coupled with another $100,000 hit for Cuban's trip onto the court during a Mavericks playoff game on Sunday. The complaints certainly aren't a surprise from the always controversial Cuban. But the fine is sure to raise lots of questions about freedom of speech and blogging. For Cuban's reaction to the fine, click here, and here for Cuban's colorful comments on a recent NCTA National Show panel