Facebook released a new feature today: Safety Check. Basically, if Facebook observes that you are within the limits of a certain city affected by some sort of natural disaster, they will ask you to "check" in that you are safe, so that your friends and family won't be worried if they check on your Facebook. Alternatively, you can mark yourself as outside the affected area if Facebook got it wrong. Facebook's story: "We want to provide a helpful tool that people can use when major disasters strike, so we’ve created Safety Check – a simple and easy way to say you’re safe and check on others." A similar feature exists on Google, but Facebook's decision to publicly release this feature on a widespread scale is quite interesting. Still, there doesn't seem to be any action taken if you don't say you're safe (presumably because that would be a logistics nightmare and the job of emergency response teams). Still, I'm going to have to say that this is one of Facebook's more useful adaptations: thank you for finally using all that data you track and store to do something that actually gives your users peace of mind!