Here in 2016 my own SEO blogs haven't worked so well when linkbuilding normal articles - 350 words or more - with links for my customers. I use anonymous user owner data for the sites and some different country IPs. Used to work a year ago. Maybe Google is attacking anonymous user owned sites. Really discriminating or maybe some of my sites just ended up in at bad neighbourhood.. Don't really know. Often the links have no effect at all or are viewed negatively or just gives a brief rank boost. My blogs are old domains all of them and all with backlinks, but not linkbuilding so much, so they could need some fresh links maybe. Anyone experiencing the same issue??