160by2 is a site where you can send free sms to all networks in India. As name suggests this site gives 80 characters to user to send his message & remaining 80 characters are provided for the advertisers. So you can send sms for free & advertiser will pay your sms bill.
This is great opportunity for advertisers to promote their product; because user itself sends the ad. Also advertiser can limit their ad to some region. So its cheap than any other advertisement & more efficient because receiver reads that ad.
So send free sms visit http://160by2.com