The Problem:

Comment spam plagues millions of blogs around the world today – it’s been an issue troubling bloggers / blog sites since the historic mention of blog itself! Spammers bombard blogs with fake hyperlinked comments in the hope of getting credit for the backlinks to their websites, thereby improving their own search engine rankings.

NOFOLLOW

… Yeah! It does mean ‘do not follow’, if you were guessing that.

But the question is: In what sense?

Let me give you few characteristics of it:

NOFOLLOW …

• is an SEO term.
• is an HTML tag written in the source code of web pages.
• is written as: rel="nofollow"
• is associated with hyperlinked texts & images (usually directing to a new website)
• is an instruction given to the search engines telling them not to rank the destination pages of the hyperlinked texts/images.
• does not affect (increase or reduce) the page rank of any web page (neither the host, nor the guest).
• The nofollow attribute value is neither meant for blocking access to content nor for preventing content to be indexed by search engines.

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Today's Inspirational Quote:

"Hide not your talents, they for use were made. What's a sun-dial in the shade?"

-- Benjamin Franklin

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You must have got my point by now, didn’t you?

Well then, let me rephrase it this way – ‘Nofollow’ is an HTML attribute used to instruct search engines to not to rank the destination page of the hyperlinked texts/images with reference (or depending on) to the current pages’ PageRank.

A little complex, isn’t it?

Hold on! This example should help you:

Suppose, there’s a blogsite named ‘A.com’ which has PageRank 9/10, now a common practice is that people post comments on this blog site. Smart SEO’s know how a web page’s PageRank will benefit their own website i.e. by posting their comment in a hyperlinked manner (with the links directing to their websites), and as you may guess, having a link on a highly ranked page is worth a deal – your webpage’s rank gonna rise up automatically.
If you're a blogger, you surely must be familiar with people who try to raise their own websites' search engine rankings by submitting linked blog comments like "Check our excellent offers Now!" or such… This is comment spam!









To help STOP this comment spamming Google has proposed this NoFollow thing. Now blogsite owner’s have a smart option of stopping people from gaining page-rankings from their websites. Just inserting this small tag in their code will stop search engines from getting influenced… isn’t that cool? Many blogging platforms assign the nofollow attribute to all user-submitted links like comment data, referrer lists, commenter URL, etc. 

So, whenever Google sees the attribute (rel="nofollow") on hyperlinks, those links won't get any credit when it ranks their websites in search results. This isn't a negative vote anyway for the site where the comment was posted; it's just a way to make sure that spammers get no benefit from abusing public areas like blog comments, trackbacks, and referrer lists.

Plainly speaking, ‘This attribute basically instructs search engines to ignore the links provided by blog commentators when calculating the link destination's pagerank.’

Note-Worthy Note: Few search engines literally do not follow the link, do not index it, and do not include them while ranking while few follow the link to find new web pages for indexing.

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