The NBA fined NBA stars -- Phoenix forward Amare Stoudemire, Charlotte center Tyson Chandler and Boston forward Rasheed Wallace -- last week and over the weekend for "in-game tweets" and criticism over officials.
The Celtics' vet, Wallace, was hit with a $30,000 fine on Friday (November 27) after he criticized refs following the team's win over Toronto.
Both Stoudemire and Chandler received $7,500 fines each for posting messages on their respective Twitter accounts during their games on Wednesday (November 25), a violation of NBA rules.
The league revealed their move to block players from "tweeting" during games in September, after the microblogging site grew in popularity over the last year.
"You want to make sure that pop culture doesn't intrude on what brought us here, which is the game, and that we show the right respect for the game," NBA commissioner David Stern said. "We just need to make sure when it's OK to tweet and when it's not OK to tweet, so it, at least, focuses around the game.
"It would look unusual for a guy sitting on the bench to pick up his cell phone, and I think we can agree that he probably shouldn't be writing e-mails. It's not about Twitter; it's about the line of communication. That's what we're focusing on," he continued.