We’ve all seen comment spam, porn or casinos high authority blogs but how these messages have been avoided spam? Simply using a nofollow tag on backlinks created when someone comments. Ya, but what they are, why we use them, how not to use?
This snippet can change how your site ranks.
What are nofollow links?
A nofollow link is simply one that includes the tag rel = “nofollow” in the code. If you add this meta tag between <head> </ head> of a page, these are not taken into account with respect to its position.
This allows webmasters to decide which pages of your site should receive a PageRank (for a user viewing the page, the links look exactly like the other).
Think of the internal and external links on your site like bridges. The anchor text or anchor text is the signal that tells the bots where they could go and find a followable link to cross that bridge.
If you include a nofollow tag, humans can venture to the other side, but no page rank.
Why use nofollow links?
The no follow tag lets you notify robots not want that page or link is taken into account for the pagerank of the site.
Although this tag only be suggestive, ie, Google still can pass PageRank or validate a link if you so choose. Currently there is much debate about the effectiveness of the nofollow tag as a way to stop the page rank flow.
How not to use the nofollow tag
Unlike the tag noindex, nofollow tag the passage only deals pagerank, and not specific to individual pages ranking.
If a particular page has the noindex tag, this may still have dofollow links and pass the pagerank – although it could not be found in search results.
Do not forget that you should avoid adding the nofollow tag to each link of your site, as this is essential to spread the Page Rank of your site to each internal page so that they can receive the benefits of the classification and authority.