An SEO issue that has been debated a lot is that of imposing “NoFollow” on your blog’s comments to prevent Pagerank leakage. There are two schools of thought on this: People on one side believe that placing a nofollow tag in the outgoing links of their blog’s comments will prevent “PageRank leakage”. In other words, they believe that they can link to websites without Google counting them as outgoings links from their web page. This strategy has also been endorsed by many big websites, like Youtube, Google, Proz on certain elements of their interface. (But as some of those websites depend heavily on how ‘cool’ they are, doesn’t this strategy make them ‘uncool’?)
The other says that Google generally promotes good Internet citizenship and sociability. It wants you to link to other websites, and why would they penalize you for it? This, of course, provided these websites are somewhat relevant to yours and of decent quality. Google’s spider loves links, and the nofollow tag was not invented to save PageRank from being passed – it was originally created to help stop comment spamming on blogs*. Several Google employees have urged Webmasters not to focus on manipulating internal PageRank!
I tend to agree with the second school. First, there are many useful wordpress plugins to fight comment spamming, and also the greatest weapon of all: moderation. If a commentator’s website looks something like: hhh.paris-hilton.com, then you might as well trash the comment alltogether. But providing this SEO opportunity to thousands of bloggers out there, will get you more quality traffic. Experts on your topic will start commenting on your posts, which is what blogs is all about anyway.
The link in the comment can also itself be of SEO value to your blog. If you have a blog on Cars and your commentator’s link is “hhh.new-cars.com”, that little word (“cars”) adds to the SEO of your page. Also, we need to be aware that having our comments open and “dofollow” is a sign of good Internet citizenship. It’s an open invitation and shows good will. On the contrary, “nofollow” is like having a giant dog and electric wires outside your house while having invited your neighbours for a tea party: it doesn’t work that well, does it?
To sum up, open and SEO efficient comments will help make your blog vibrant, crowded and relevant to its topic. There is nothing wrong with people wanting to comment mainly on blogs with “dofollow” comments. Most bloggers lead a busy life, so doing something with a dual effect is always preferable. So, open up!
Make your Blogger comments “DoFollow”: http://goo.gl/k7jKq
And here for WordPress: http://goo.gl/V3iDU
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