The ad with the grandmas is cute and funny, but from the first 20 seconds you can see that the voice annoyingly interrupts people while they are talking. It's almost as if it tries to reply too fast - faster than a real person would, and the results is that it replies while you're still talking.

Oh and there was also a small fail in the live translate demo: the grandma says "tell him that..." which the bot translates verbatim, whereas a real translator would of course understand that this is an aside not to be translated.

Well I guess at least I should be happy that they're transparent in their ads :)