I bet most of us have encountered a “tell a friend” advertising method before. This is the most simplest technique in viral marketing. You only need to invest in a simple “tell a friend” script and you are all set to go. Many companies have used this method to spread their product and to build up a strong brand name capitalising on the trust of the person sending the mails. Some have even enticed people to tell a friend by giving away freebies if a friend they recommend sign up for a service or bought a product from the company. I have personally recommended many friends to signed up for a new credit card by HSBC in return for a voucher.
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