Here's everything Facebook announced at its biggest event of the year (FB)

Facebook is holding its biggest event of the year this week.
The F8 developer conference, held this year from April 30 to May 1, kicks off with a Tuesday morning keynote from CEO Mark Zuckerberg and a host of other Facebook executives.
Business Insider attended the keynote, and wrote up every big announcement from Facebook's F8 as it happened.Facebook has kicked off its biggest event of the year.
F8, the company's annual developer conference, is happening this year in San Jose, California, from