If the user notices that they are feeling lonely / depressed / suicidal, they can push the “Blue Button” added to their FaceBook dock.

Many users may not notice that they are feeling lonely / depressed / suicidal, because it happens gradually. In this case, FaceBook would notice changes in the user’s activity, which are correlated with loneliness / depression / suicide, and prompt the user to press the “Blue Button”.

FaceBook can identify using: Location-based info on not leaving their house Sentiment analysis in conversations Revisiting same page / refreshing feed (adjusted by user behavior)

How lonely (scale 1-10)? Suicidal? Need anonymous help, or from friends?

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