The latest: A $25,000 bill from the league for two messages, totaling 49 words, that he posted via Twitter on Friday night. Both tweets complained about the officiating in that night’s Mavericks-Denver Nuggets game.

Cuban’s response? This tweet, posted Sunday afternoon: “just found out got fined25k by nba.) nice.” And then, upon further reflection, he penned this beauty:

Cuban is now wondering aloud, via Twitter (of course) and his blog whether his tweets ought to be considered copyrighted–that is, whether blogs and other publications need his permission to reproduce the stuff he posts. I don’t think so, obviously.

But for what it’s worth, I did check Twitter’s terms of service, and was a little surprised to see that the micro-blogging service doesn’t exert any claim on its users’ work. That’s a refreshing change of pace compared to Twitter’s Web 2.0 peers.