According to SportingNews.com
“The NFL will not allow in-game Twittering by players, coaches or others on the sidelines during games, league spokesman Greg Aiello told ProFootballTalk.com on Thursday.
“We already have a rule that prohibits the use of cell phones or other handheld devices in the bench area during games,” Aiello told the website via e-mail.
The issue came up when Bengals receiver Chad Ochocinco told a radio station this week that he inteded to start sending ‘tweets’ during regular-season games.
“I’m going to really make it fun. I’m using Twitter during games, during halftime, after the games. I’m going to be taking it to the next level,” he told KGOW in Houston.
PFT promises to look into whether the NFL’s ban on handhelds extends to the locker room.
Jim Mora was fined $25,000 for taking a cellular phone call during a game in 2005.”