Sms to 5 cents with iPhone and BiteSMS.

Yes, you can send sms to 5 cents for all actors: Tim, Vodafone, Wind and Tre. It 'better than any long-term promotion of any operator.
But not enough, because at the same price you can send to all numbers in the world
What do you need?

iPhone an "unlocked"
L 'biteSMS application, downloadable from Cydia, seeking "biteSMS" in the [...]