1- You sign up and it's totally free. You will never have to pay a cent!
2- You open your mails and you click on the links included
This is an example of emails and link you want to look for :
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Blablabla Search.
Looking for something? ;)
http://www.company.com/sites/jonpaul/flowers.html
http://www.program.com/scripts/runner.php?EA=200409246264017612 (don't try this one, it's not working. It's only an example :)
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3- You have to click on the blue links you find in the mails you receive. There will be a timer and you will be credited after the timer expires. After you reach the payout, you request the money. Simple!