Warning: You won't earn awfully lot from it but well, it won't cost you too much time everyday, you can take it as an extra earning.
Tips:
1.If you want to receive Payment from it, you should FIRST register an account for Paypal/Alertpay !
2.And remember to save the site as bookmark on the bookmark bar so you can get access to it quickly.
3.Always read the instruction carefully or you might loss money in some tricky way.