Twitter is going after news media that share highlights of U.S. football games without sports organizations' permission. The move shines a spotlight on the notion of fair use of copyrighted content.
The former NSA contractor's first tweet was, "Can you hear me now?" Snowden is still in Russia, after leaking a large cache of highly classified material.
The announcement is welcome news for political campaigns, which all want to make it as seamless as possible for supporters to turn over their money and personal information.
The Vermont senator again was commenting live on Twitter about the GOP debate. He got tens of thousands of retweets — until he decided about half an hour before the end of the debate to just go home.
A freelance writer got the company to take down several unauthorized uses of her humor by what she says are robot accounts, but legal scholars say proving copyright on jokes is difficult.