I could say the same about snail mail to a degree. Plenty of start-ups have talked about how their thank you cards were "revolutionary." NextDoor is using post

I could say the same about snail mail to a degree. Plenty of start-ups have talked about how their thank you cards were "revolutionary." NextDoor is using postcards to validate addresses and for some good old fashioned marketing. Where else can we go back in time??? =)