I'm now doing a plan to SEO for my website and these things are what I do: + create about 100 wordpress.com blog and blogspot.com + write 3 articles for each blog, by my hand + each blog has different template and widget ... etc + build for each blog some backlinks + all of 100 blogs have niche that related to my main blog So, do backlinks from 100 those blogs back to my main site are good enough ? ---updated--- I have some ways and tips to make sure these blog get in different c-class IP, then it will be okay. I have plan to building these blog, keep writing on each as normal blog and create more than one blog post point back to my main blog post -> Does it good ? Of course all article are unique. The 100 blogs not have all post point back to my blog, it also have other post with normal post. So the question at here: more than one blog post point from those blogs to my blog still good ?