Links on the Internet are DoFollow, or followed, by default. A
DoFollow link lacks the NoFollow attribute, and so passes
PageRank or link juice to the target web page – that is, the
page it links to. The NoFollow attribute was introduced so that
website owners could selectively tell search engine spiders to
ignore specific links when it comes to determining the search
engine ranking or PageRank of the target web page. This is what
the HTML code for a NoFollow links looks like: <a
href=”http://example.com” rel=”nofollow”>anchor text</a>
NoFollow links are now commonplace in certain types of websites.
For example, most blogs are configured so that all links in the
comments section are NoFollow to deter people from filling up
comments with spammy links. Also, many popular social networks –
such as Facebook and Twitter – set all links in people’s posts
as NoFollow by default. Again, this is to prevent spam. On the
Web, a link to a website is essentially a vote for that site.
You may not want search engines to thi