Prior to nofollow, preventing robots from following individual links on a page required a great deal of effort. The value of nofollow tags to Google ranking is debatable. Google maintain they do not count nofollow links and any authority associated with a nofollowed link is discarded.
However, many in SEO believe that in some cases there is some value being placed on nofollowed links. Our advice is to always ensure there are nofollow instructions on advertising banners or outright promotions. Fast forward to March and Google announced that they now see the nofollow attribute as a hint rather than a directive. In addition to this announcement, Google added 2 more rel attributes for identifying the intent of links. Sponsored post.
This attribute is used to identify user-generated content like forum posts or blog comments, for example:. Comment or forum. Both new attributes can be used with the nofollow attribute, which I have included in the above example. Just a quick bit here about paid links: many people have conflicting opinions on exactly what a paid link is.
However, Google describes paid links as including these types of links:. Here is a synopsis of the current list of what constitutes a link scheme :.
Typically this attribute is applied to an external link pointing to a different website rather than internal links pointing to a page on the same website. It is used to indicate to search engines that this link should not be associated with your site for link equity or site authority purposes.
As Google continued to fight against poor quality backlinks, they developed an algorithm update which penalized websites that were gaming the system with spammy link building tactics. The Penguin update first rolled out in , and further iterations refined the criteria for penalization. In , Penguin became a part of the core Google algorithm.
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