[pmorici]

Sending texts isn't free. Not many people are going to be willing to pay 5 cents a pop just to piss people off on a large scale.

[canuckintime]

Sending iMessage is 'free'

[h4waii]

You can quite easily purchase unlimited outbound SMS from just about any local carrier in any part of the world for less than $20, either one time or monthly.

It would be very easy to mass message this to an entire country in a matter of weeks.