The studio is demanding that Twitter suspend the account of a user associated with tweets containing screenshots of hacked emails.
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How Many People See Your Tweets? Twitter Opens Its Nifty Analytics Dashboard To Everyone
Twitter launched a really nifty analytics dashboard.

Twitter Officially Introduces The Mute Button For Android, iPhone And Web
Twitter has officially announced “mute,” a new feature for its Android, iPhone and web clients that lets users selectively turn off the posts of certain users they follow, without unfollowing them.

F-bombs away! Twitter map tracks curses in real time
A new interactive site displays where, and how often, people around the world use the F-word on Twitter. Looks like New York is really effed up.

Anger spreads faster than joy on China's social network
A study examining human emotion on Sina Weibo shows that angry posts are passed along at a far higher rate than those of joy, sadness, or disgust.