Twitter has been abuzz all night with the news that tween pop star Justin Bieber was booed at Madison Square Garden during tonight's Knicks-Mavericks game. Well, now we have video—and it's true! Aw. Leave the poor girl alone!

The NBA has fined Dallas Mavericks owner Mark Cuban, the dotcom billionaire, $25,000 for slagging referees on Twitter Friday. His Twittered response: The league has found a way for Twitter to make money.

Is the Internet boring? Well, generally speaking, duh. Except, of course, when blogging luminaries get into a scrap over whether it is. Billionaire entrepreneur and Dallas Mavericks owner Mark Cuban started things a month ago when, in an offhand sentence, he declared the Internet "dead as a growth platform" because of a stagnation in the speed of home broadband connections. He reiterated his comments to Portfolio.com, and then repeated them on his blog. Say something often enough, and people start to notice. People like Web 2.0 venture capitalist Fred Wilson. A classic blogfight — observing the three rules of the genre — ensued.