Global.AQ is a SMS application which allows you to send messages over your data connection.
Works on almost every networks around the world. If it doesnot on yours, let us know and we make sure it will.
Note for US users: you MUST enter phone numbers in international format. This means +1.... (see also help).
The + symbol is usually press and holding 0.
Country codes are listed here:
http://en.wikipedia.org/wiki/List_of_country_calling_codes
Note: you can not receive any SMS with this version yet, only send. Version 2.0 will support receiving.