Backlinks are links from other sites that point to your site. They are a critically important variable in your overall search engine optimization strategy. The question is: does commenting at other people’s blogs with links to your website increase your backlink count with Google and as a result help to improve your Google rankings?
In other words, if you find a bunch of blogs and leave comments will it help to increase your rankings at a search engine like Google?
The answer is NO.
The reason is most blogs use the “no-follow” tag with blog comment links.
How does Google handle no-followed links? In general, they DO NOT follow them. This means that Google does not transfer PageRank or anchor text value across these links.
Essentially, using nofollow, which most blogs automatically do to comments, makes those links invisible.
In other words, commenting on someone else’s blog with the hope of it creating a backlink to your website – is a waste of time.
For supporting information and specific details of what Google is looking for (and what it is ignoring), visit: http://www.google.com/support/webmasters/bin/answer.py?answer=96569
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