With this invention, the old phrase "Talk is cheap" is out of the window. Shoot whoever came up with that in the first place!
Also, as the technology grows and becomes widely adopted, the phrase "Power-talk" will make an entry into the English dictionary.
"The Oxford English Dictionary, 2012 Edition.
Power-talk(1) (n, adv) - The crude, despicable act of shouting into a mobile phone to power it up using piezo electric technology.
Power-talk(2) (n, adv) - The act of talking high and mighty with those less powerful than you to intimidate them or to display an apparent sense of superiority. As in, The power-talk by Barack Obama to Muhammed Ahmedinejad apparently had no effect on the Iranian leader, except to light up his mobile phone's display briefly.