Is Free Traffic Really Free??

Friends we all witness many companies (websites) committing to provide you free traffic. Moreover they promise to give you ?quality? and ?high-quality? traffic to your blog, site etc. The real question is Do they really provide free traffic? How easy that that will when we will not have to invest ?Huge Amounts on SEO? and would still be getting traffic and business? Is it a daydream or reality? How do they provide free traffic?

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