I think it's Graph Search because there isn't any graphs in Facebook. That is my opinion. I don't use social media.
B) Spreading the news about the incident response plan is not a good idea. If an incident was intentionally caused by a malicious person or group, knowing your response plan gives them information about how to make things worse.
Rounding Numbers
Say you wanted to round the number 838.274. Depending on which place value you'll round to, the final result will vary. Rounding 838.274:
Rounding to the nearest hundred is 800
Rounding to the nearest ten is 840
Rounding to the nearest one is 838
Rounding to the nearest tenth is 838.3
Rounding to the nearest hundredth is 838.27