Facebook and Twitter clash over fact-checking as Trump threats intensify

For years, Twitter and Facebook have enjoyed a healthy rivalry: They’ve competed for acquisitions, talent and advertising dollars, and sometimes gone so far as to copy each others’ features in the never-ending pursuit to grow their audiences.

For years, Twitter and Facebook have enjoyed a healthy rivalry: They’ve competed for acquisitions, talent and advertising dollars, and sometimes gone so far as to copy each others’ features in the never-ending pursuit to grow their audiences.