Better idea: as soon as I get a call from an unknown number, do a search for the number in facebook to see if you can find more information, and pop up that in

Better idea: as soon as I get a call from an unknown number, do a search for the number in facebook to see if you can find more information, and pop up that information on the phone before it even starts ringing. There might be a problem of spam whereby one person creates a fake persona with their phone number and pretends to be someone else, but I think facebook could solve that problem.