Nofollow tags prevent google indexing. They weren't created and a bunch of effort was not put into the rel="nofollow" tag so that they would not work. All you have to do to figure this out is go to some ginormous blogs and look at the most popular commenters profile pages. I'm referring to a high pr blog where the rel="nofollow" tag is implemented on his or her comments that link to his or her profile page. (nofollow tags on comment profile links since inception of blog) There are many high PR nofollow blogs that have commenters with hundreds and thousands of posts....and their profiles are not even indexed in google. The obvious conclusion to draw from this is that - if nofollow tags prevent an authority profile from being indexed, who has tons of comments on low and high PR pages, then nofollow tags do not effect PR or serps. If nofollow tags prevent pages from being indexed, why then would they effect PR or search engine results. *Note that - i'm referring to Google indexing, PR, and serps... didn't bother to test yahoo or bing or anything.
rel=nofollow has nothing to do with indexing. Your logic is flawed. The profile page may use the meta "NOINDEX" or the site may direct crawlers to *not index* the 'profile' directory through robots.txt. 'Nofollow' is exactly what Google said it would used for, preventing PageRank from flowing to the target page. That's it. Nothing more, nothing less. /*tom*/
i agree with what youre saying there are other factors such as you mentioned that could prevent profile indexing. On blogs i've examined i could tell that they were not deploying those methods
why do you not think this? I recently started a dummy site and commented on over 40 nofollow blogs. it did not get indexed for 3 months at which point, i put up a PR1 dofollow link, then i was indexed 4 days later.
As far as I know NoFollow links does not pass on their link juice to the sites linking to them. So if I am linking to a site that is PR5 that is NoFollow then its PR will not be passed on to my site.
Notwithstanding failure to pass linkjuice, Nofollow links still help SERPs. I've witnessed how keyword rankings increased because several PR0 blogs (with nofollow) linked to sites I manage. Bottomline: get as many links as you can.But not from farms, mind you
noidex tag only effect the PR and ranking.................nofollow is only for robots and spiders, do not follow the link................
In my own experiences, nofollow backlinks would still help in SERP but not PR. While, noindex would keep crawlers from indexing your pages. Thanks,
No follow means there is no juice or substance to PR ranking or SERP of your site but it has some effects in your site like traffic... I guess the word has speak for itself already
It might be correct coz I ve also seen it a couple of times that a page which has all the links as nofollow since it exists is not indexed by Google...but still apart of the robots.txt or noindex tag, Google might be applying some other algo factor for not indexing that profile page...you never know! Now one may say in converse that, there are many pages indexed in Google which has got only the nofollow links and not a single dofollow link...but then also there can be something unseen. For e.g. 'Privacy policy' page on my site is PR2!...while it has not got single dofollow backlink from my site or externally...this is because, it used to be a .html page before couple of months which had got dofollow links...and now redirects to non .html link...I am sure that in next PR update it will loose its PR and probably vanish from search results...lets see
It is correct that nofollow links does not affect the pagerank of the website.I have seen many times that nofollow links are not create any issue regarding pagerank.