Now everyone is happy that Facebook finally have an anti-virus tie up that will ensure you're protected against Viruses and Spyware. The Good news is they have tied up with anti-virus giants, McAfee ! Here comes the bad news , McAfee oly provide a free six month subscription to McAfee's security software. And here is the company trick , At the end of this period, special discounts will be offered to users to choose to continue the service ( this is how they earn money ) The service is only for users with Windows operating systems. This is what we call that " There is no free lunch in this world " . To sign up with it , you need to provide your credit card information and paypal ID . And after six month of Honeymoon is time to increase your burden and no more Honeymoon... Good luck.. :)