How important is PageRank

When Google was in its childhood, PageRank was the single most important factor for ranking well. However, as soon as the SEO community caught on to this, there was a great deal of people who found ways to artificially boost their clients' PageRank. Those sites became more authoritative than Google thought they should be. Since then, Google and other search engines have constantly refined how important PageRank is, and its importance has definitely declined through the years. One tactic Google uses is to update Google Toolbar PageRank values four times a year instead of every week, making it difficult for SEOs to know a site's real PageRank. Another tactic is to prevent a site that has been known to sell links from passing any of its PageRank (authority) on to sites that it links to. However, Google can't use that tactic too much because then they run the risk of preventing good sites from being ranked as they should be. This is a battle between Google and SEOs that will not be ending anytime soon!