Do-Follow Links:
When Google bots are crawling a
website they look for external links point to other websites. If this links is
“do follow” then search engines will follows the link and so link juice gets
passed.
For eg:
<a href= http://knowonlinemarketing.blogspot.in/ rel=”dofollow”> Digital/Internet
Marketing </a>
Notice the rel=”dofollow” and
rel=”external” in the above code. They define the link as do follow. Also if
you do not use rel attribute the link will be treated as ‘dofollow’. These
links are important in terms of SEO as they are tracked by search engines and
the value (which is called link juice) of the links also gets transferred.
No-Follow Links:
If a search engine finds a “no
follow” backlink it will just ignore the link and will not get deeper into
crawling and no link juice is passed.
For eg:
<a href= http://knowonlinemarketing.blogspot.in/ rel=”nofollow”> Digital/Internet
Marketing </a>
Notice the “nofollow” attribute in
the above code. This defines a code as “nofollow”. So “nofollow” backlinks are
not important in terms of search engines as it is not crawled. The comments
section mostly have no follow links. But that does not mean that these links
are useless. You can still get some quality traffic from these also.
For eg: you went to a well known
website and you commented something which attracts readers attention then the
reader might want to know more about you (as this is human tendency) which
may help you in bringing some quality readers. So don’t ignore it like search
engines.
How to know if a link is “dofollow” or “nofollow”?
In Mozilla and Chrome, just right click the link you want to check and select “Inspect Element” in the menu. As you select it a window will open in the bottom of the browser with a highlighted link with complete html code. There you can see whether the nofollow tag has been used or not. If it is used it will be No follow link otherwise dofollow link.How different search engines treat Nofollow?
Google: Google does not follow the nofollow link.
Yahoo: Yahoo follows that link for finding new content but link
juice is not passed.
Ask: It does not follow nofollow tag and treats it as normal
dofollow link.
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