Send Free SMS Using Gmail

Gmail allows you to send 50 free SMS per day and
mostly this facility supported with all mobile
operators.
How to send free SMS in gmail?
Login to your Gmail account
Go to Settings
Click on Labs tab
Enable SMS (text messaging) in Chat
Click on Save Changes
Type your Friend's phone number in chat box and
click on Send SMS ant save the number
That's all !!! Now your message will send to
particular mobile number via SMS and if the
person reply for the message it will show you in
chat box window