One small tweak to an algorithm, one giant crater in Mark Zuckerberg's net worth.
The Facebook CEO took a $3 billion hit to his net worth on Friday as his company's stock dipped following news of major changes to the company's News Feed.
SEE ALSO: The time has come for Mark Zuckerberg to reveal his 2018 personal challenge
Facebook warned that the changes, meant to boost the visibility of posts by friends and family, could mean people spending less time on Facebook. That would mean less adds,...