The Social Web has redefined the way in which people interact with each other using computers, and it has also revitalized the concept of word of mouth marketing. The site under review right now proves it like little else.
Invite Box will let you add a tell-a-friend widget to your existing online store or site. Those who sign in via their Facebook, Twitter or Gmail accounts are enabled to tell their friends about the products that are listed on your store, and earn instant rewards for doing so. Everybody wins. They become participants of the rewards system provided by Invite Box, and your site receives a healthy influx of visitors.
The implementation of Invite Box is as simple as choosing the domain you want the widget to be added to, individualize the pertinent social sites that you want it to support, and then paste the code that is generated. And while the service is a paid one, you can actually get a free lifetime account for one domain if you manage to refer three friends to the service.
InviteBox.com In Their Own Words
InviteBox allows your users to share your product or service with their existing social graph. By signing in with a Gmail, Facebook, Twitter or other social networking account, users can tell a friend to earn instant rewards and, in the process, send you high-quality traffic.
Why InviteBox.com It Might Be A Killer
For the simple fact it turns word of mouth into something even more powerful than it was before.
Some Questions About InviteBox.com
How many new visitors can you get in such a way? 
