Welcome to this morning's edition of "First To Know," a series in which we keep you in the know on what's happening in the digital world.
Today, we're looking at three particularly interesting stories. Greenlight Capital sued Apple Thursday, hoping the action would get Apple to return more of its cash reserves to shareholders. LinkedIn reported fourth-quarter earnings Thursday, pulling in $303.6 million in revenue, which soared past analyst expectations by more than $20 million. And Facebook had a bad day yesterday: problems with the Facebook Connect API caused errors on countless sites around the web.
Check out the video above for more on these stories.