Its a simple and interesting way of earning.After we have registered , they will send us e-mails with links in them.Just by clicking on these links we earn cash.
They also have ads in their website.Clicking on them also earns us cash.
They have many contests open at the moment.Attractive prizes are offered.
By referring your friends to these sites you earn cash for the e mails viewed by your friends.
Given below is one such site that offers all the above.
bravenet.com