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. A group called Restore the Fourth is organizing street demonstrations across the country to rally against recently revealed NSA surveillance programs. Twitter is revamping its ads to bring users more relevant promoted tweets. And Yahoo acquired San Francisco-based email management startup Xobni ("inbox" spelled backward) for upward of $30 million.
Check out the video above for more on these stories.