There’s a lot of smoke and fog surrounding this metric, so this week, Rand gets down to the nitty gritty of what it all means.
What is PageRank?
PageRank is a metric designed to calculate the global link popularity of a page. Global link popularity assesses the importance of the pages linking to you, and how that affects your page’s importance.
How/what do the search engines use PageRank for?
Crawling – PageRank assesses which pages should be crawled.
Inclusion (importance/uniqueness) – It’s highly likely that the big search engines have a variety of indexes, eg. Old, good, and fresh. PageRank can then inform the search engines about which index the page should be in. PageRank can also help assess duplicate content.
Freshness – Sites that are updated frequently may be crawled more often due to the changing content, and PageRank will help assess how frequently a page should be crawled.
- Ranking – PageRank could be used in the ranking algorithm at Google.