Link building, if not done right, can get you in hot water with the search engines. We’re seeing this more following the recent Penguin update. As you begin your link audit, make sure to check the following areas to ensure an optimal link profile.
Yes, PageRank isn’t as important a metric as it used to be and certainly not something to obsess over. However, it is still a decent indicator of the authority of your website.
See on searchenginewatch.com