Thanks. I'm aware of this report and it's definitely awful what they did and they should be shamed for many years forward.
But there is big difference between comparing moods induced by negativity and "Facebook is proud that it knows how to make you depressed, so much so that they published a paper describing how they made hundreds of thousands of their users fall into a depression."
OP statement is misleading and tabloid worthy. The goal was not to cause depression. It lasted one week and they didn't try make someone depressed or kill him.
Or did you just made that all up, hmm?