Hollywood is coming down with the Twitter jitters.

There's a growing number of studio deals with new language aimed specifically at curbing usage of social-media outlets by actors, execs and other creatives. The goal: plugging leaks of disparaging or confidential information about productions via the likes of Twitter, Facebook and YouTube.

The crackdown comes as creatives on both sides of the camera have taken to the Web to share candid thoughts, at times circumventing traditional studio PR voiceboxes. For example, Paula Abdul surprised Fox executives by tweeting news of her parting ways with "American Idol." Ryan Seacrest broke the news of Ben Silverman's transition out of NBC on his Twitter feed.

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