Verizon is offering those who sign up for the the World Messaging Unlimited plan a $15 savings, by making the first three months free. Keep in mind that Verizon is characterizing this as a limited time offer, so don't start making a long 200 page list of pros and cons. If you make international texts and call often to Mexico, Canada, Central America and the Caribbean, this would seem like a no brainer.
Send unlimited international texts for free with Verizon's new plan
source: Verizon via Engadget