After 2nd 'Human Disaster,' Facebook Safety Check On

Through Nov. 12, Facebook's Safety Check feature had been activated only in the event of four natural disasters, the first being April's Nepal earthquake. In the five days since, it has been twice deployed for "human disasters." CNN Money reports that the feature was turned on Tuesday following a bomb blast in Yola, Nigeria, that, as of the AP's latest report, killed 34 people and injured 80.

"After the Paris attacks last week, we made the decision to use Safety Check for more tragic events like this going forward," Facebook CEO Mark Zuckerberg wrote in a post Tuesday. (CNNMoney notes some 4 million people identified themselves as "safe" in Paris.) As for what "more" means, "we're now working quickly to develop criteria for the new policy and determine when and how this service can be most useful." (More Facebook stories.)