I have been using podium for about 2 years now as my only point of contact between me & potential clients or colleagues in our office space here at work (we are located near Central Park).
The ease by which you can communicate through this app has saved us so much time! It's very easy even if people don't understand english well enough because it automatically translates everything into their native language making communication easier than ever before. You do need some knowledge how things like texting works but once thats out there its super simple. We've had no problems whatsoever over these past two yrs - we recommend trying them out yourself first though :) just send someone who doesn't use any other form of messaging/communication system yet to try it & see what they think afterwards :p great service overall!! saving tons og wasted minutes every day chatting w/ eachother.