Leave it to the sport of super-shushing and scurrying little servant boys to demand the air remain rarefied enough for people to smack a ball back and forth over a net.

RWW transcribes a written warning found in the players' lounge of the US Open, which warns against "Twittering." After noting how great Twitter is for fans "to become more engaged in you and the sport," it jumps to the "dangers posed by Twittering as it relates to the Tennis Anti-Corruption Program rules…Twittering is not allowed on court during a match," and bars "communication of any kind during your match to a person off court for the purposes of sending information about the match…is prohibited." Grunting like a neoprene-clad cro-mag is perfectly fine.

So Serena Williams, Andy Roddick, and all other Tweeting tennis players: beware! Your hundreds of thousands of followers are going to have to miss out on your to-the-second updates on how your shorts are chafing you or how you're blinding your opponent with the reflection from your diamond necklace. OR, you could choose the route of Chad "Please Just Talk About Me, Please?" Ochocino and just cold victory Tweet after an ace. We know you're not afraid of the repercussions.