How can I send a text (SMS) message from my Yahoo or Gmail account for free?

Please help!
How can I send a text (SMS) message from my Yahoo or Gmail account for free?
Two ways:





1) In your PC Yahoo Messenger, in the file menu click "Actions" and select "Send an SMS message.."





2) Go to http://mobile.yahoo.com, login with your Yahoo ID and use the module at the lower right hand side of the window entitled "Send %26amp; Receive Phone Text Messages"





Method 1 allows you to send to a wider list of countries and carriers. Method 2 is restricted to U.S. for now.
Reply:The "free" part clinches it. So far as I know, you CAN send SMS easily, but for a price. There IS a way to send text to most phones though. If you know the number, and the carier's @blahmobile.com address, it should work. It'll come through to the phone, but simply as an email, rather than a simple messenger service text. The result will be the same. Whoever ya need to contact, will get the message. Keep in mind that's from YAHOO, or GMAIL. if you go to the person's cell phone carrier website, and look around for someting like "send a text message" ya should be able to send a text to the phone number absolutely free.
Reply:You can send an SMS from Yahoo Messenger. Its free. There you have to logon to the mobile device, by inputing your number and then send a message.