Edit: for the record this is not a slant against those who use Yahoo Finance. Even back when I used it in high school it was good.
Nobody wants to be told they have been laid off by finding your name in a power point in the morning, just because you live in a different time zone. They have offices around the world, so it is difficult to inform everyone at the same time without calling someone in the middle of the night.
At the same time those who have been informed are talking to other employees, and news spread fast. So they end up with a compromise - inform the company about the process.
They are handling it better than what I experienced not long ago. After announcing the layoffs and informing the affected, they did not communicate who was affected until the week after. Colleagues who had a good network knew who were affected by talking to each other, while others were left in the dark