In a restructuring move first reported by ReCode Friday, Twitter will lay off approximately 8 percent of its work force, which amounts to up to 336 employees. It's Jack Dorsey's first major act as "permanent CEO," after having been elevated from interim. He confirmed the move, appropriately enough, with a tweet.

There's no good way to announce that hundreds of people are about to have a very bad day, but at least in tweeting Dorsey also highlighted both the inherent strengths and weaknesses of his platform. Ability to express the right combination of empathy and steely determination in just 140 characters? Check. Ability to fully detail the morning's announcement? Not so much; Dorsey had to link out to the SEC filing that contained his letter to employees, bouncing users to the Web. This also seems like big enough news to merit a Moment, collecting reactions from users and any developing information, but it seems as though Twitter won't be covering itself.

The full text of Dorsey's letter is below: