Facebook's reached 500 Million users, that's about 8% of the world's total population. To commemorate this milestone, they're launching Facebook Stories , which basically invites users to share stories of the ways Facebook has helped them.
Facebook Stories will segregate stories by themes and locations. A few of the themes are 'finding love' and 'natural disasters'. There will be a character limit on the Stories (420 characters, same as the status update bar).