When revising your backlink anchor text, Links vs domains. Another metric you will need to look at is the total number of links versus referring domains. If you have 5,000 links from 12 domains, it won't yield a strong profile. There may be reasons for this, and it may not be punishable; however, this is probably not the recipe for success. Like anchor percentages, there is no ideal distribution and there are legitimate reasons for a variety of ratios. But when comparing your links with your competitors,
this is going to be a critical consideration (more on that below). Nofollow links. It is important to understand that nofollow links do not pass PageRank. To be clear, I'm not talking about the green bar that Google discontinued last April; I'm referring to the internal fax number list PageRank scores which are still alive and well. These links will not help or hurt you and can be safely removed. In fact, I often remove unfollowed links in the first step, just to make the rest of the filtering easier. Where do your links come from?
It's important to look at the domain names and settings of the sites that refer you, not only to find out if you have bad links, but also to understand your own strengths. Links from strong sites with high relevance are obviously worth more than links from weaker sites or low relevance sites. A link to a blue widget maker's fictitious site SELwidgets.com would be far more valuable than a link from a generic directory, or even a link in a maker's