Web Design / SEO
Search Engine Optimisation for (Wordpress) Blogs | page 3 of 3
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Stopping Blog Comment Abuse and Spam

15.01.2010
Because comment facilities on blogs are the target of spammers looking to drop links to their sites, it is now standard practice on blog software to insert a code snippet into any link contained in a comment so that Google will ignore the link.

This is rel="nofollow" and I don't like it for the following reasons:

1) It doesn't stop idiots (or bots) posting.

First, people who don't know about rel="nofollow" and robots will still spam you anyway; you will still have to monitor your blog and delete these comments.

2) It doesn't stop useless posts.

Second, automated protection measures like this don't stop useless "Great post" or "Me too" comments, unlinked or otherwise, that add nothing to the article and just get in the way of reading useful, interesting or entertaining responses.

3) It could be bad for your site.

Third, Google have announced that the PageRank that would have been sent down the link if it were not marked rel="nofollow" isn’t actually saved and redistributed to the other links; instead it is just lost. In other words, rel="nofollow" links cause PageRank bleed. Many people think this is deliberate misinformation from Google, but why take the chance? 

4) Relevant links out could actually help your site!

Finally, relevant external links are looked on favourably by Google, and allowing them in certain circumstances creates an incentive for people to post and could even help your rankings.

My Recommendations for Comments

1) Configure the blog so that all comments are pre-moderated and that this is made clear.
Spam or useless posts can be kept off the site.

2) Add a captcha to the comment process.
The ReCaptcha one is highly recommended. There are few (if any) bots that can get past this.

3) Ask people to provide their (business) name) and website url, but don't make their name a link (just display the url)

4) Allow them to add links within their comment.
In other words, people don't get a link to their site unless there is something on their site relevant to your article that they mention in their response to it.

5) Keep "Thanks, great post!" responses to a minimum.

This means that links from your articles page will only be to related content that you think is interesting – a relevant article perhaps, or some useful data. This actually adds value to your site.

previous: SEO Principles to Bear in Mind when Setting up a Blog

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