Fair or unfair? You must be knowing about White and Black SEO if you have your own blog. While surfing, I stumbled upon a blog of John Chow, a guy who got to rank 3 from 158 odd in just four days(for the phrase "make money online"). I certainly think its just grey Hat SEO. In short, I had to write a review of his blog but I just couldnt find enough of that on his site which should be the case with a number three ranked blog.
I am noone to judge whats fair and whats not. DO you think it is kind of a trickery, and is bad for the blog readers. His review, from a newspaper might look like:
John Chow dot Com is a blog that helps you make money online. He is offering to link to your blog if you review his blog.