This webpage is giving a categorised list of all sites where you can free sms to different countries in the world.
Enjoy and let me know if you come across something good for India, US and Canada! I have GPRS in my mobile – I can to there and then send sms from my mobile itself
I still can’t understand why an SMS should cost as much as a voice call … when it was free for close to a year in India 3 years back (introductory offer)!
hi to youssef