1. No Profile Picture
    Contributing User
    SEO Chat Discoverer (100 - 499 posts)

    Join Date
    Jun 2012
    Rep Power

    Whats was the theory behind Google introducing nofollow tag?

    Exactly as the question suggest, I am wondering why did Google required to do so. Was it just for the sake to stop flowing pagerank or something else.

    I have read quite a places that SEO people were using bad tactics to get a backlink on a site most often visited by Google, which would in other way help them get their website indexed quite fastly. Was this the reason?
  2. #2
  3. No Profile Picture
    Contributing User
    SEO Chat Discoverer (100 - 499 posts)

    Join Date
    Aug 2013
    Rep Power
    Hi grgmathew,

    There were a few different reasons nofollow was introduced, but one of the main ones was to target comment spam. Yes, the nofollow attribute prevents any PageRank from flowing through a link that possesses that attribute. Mathematically as it relates to the algorithm, I'm not quite sure if the PageRank technically "evaporates" through the use of a dampening factor or if it is literally "blocked" from flowing from Page A to Page B. Perhaps others on the site could clarify that point better. Regardless, the end result is the same - no PageRank from Page A will be passed onto Page B.

    The belief was that by adding nofollow to all links in comments, there would be no incentive for spammers to target comments as a place to build links, because they would have no value. You still see comment spam everywhere, but that's largely the work of automated bots, not real humans.

    Today, Google encourages adding nofollow attributes to any link that might be "incentivized" or that a webmaster doesn't personally trust or "endorse".

    Hope that helps!

Similar Threads

  1. Introducing the first Google +1 exchange site
    By xian06 in forum Google Optimization
    Replies: 14
    Last Post: Jul 22nd, 2011, 02:23 PM
  2. Replies: 0
    Last Post: Apr 29th, 2011, 04:01 PM
  3. Introducing Google Latitude
    By stevejeff in forum Search Engine Optimization
    Replies: 3
    Last Post: Feb 2nd, 2010, 01:19 AM
  4. A different SEO theory for google
    By waynedonaho in forum Google Optimization
    Replies: 4
    Last Post: Nov 20th, 2003, 02:59 PM
  5. A new google theory
    By Rogue in forum Google Optimization
    Replies: 7
    Last Post: Aug 23rd, 2003, 08:04 PM

IMN logo majestic logo threadwatch logo seochat tools logo