Try Vazu The missing link between your Mac and mobile phone. Sending text messages to US and Canadian phone numbers is currently free to the most popular US and Canadian wireless providers. All you need is the recipient’s mobile number. You don’t need to know their carrier. Please post your reviews here
Tried this already and it really works. The message you send comes with an advertisement, I'm guessing they get their funding from these so they can give it out for FREE.
The danger here is that your friend's cellphone number gets stored into their advertising system....your friends might not like you anymore
