I did not use SMS free service from web before. I just came across from hongkiat blog posted about Chawt, a free SMS sending service from online that let you sent 80 characters message to any number. It requires signup and you need to activate your account with the activation code that they sent to your mobile number. Once you activate, you can sent SMS to any number over 160 countries. Message comes from your mobile number when you sent from Chawt so that they can reply to you back. Try Chawt!