What is pr 9?

PR 9 refers to a high domain authority website that has a PageRank score of 9 out of 10. These sites have a significant amount of traffic and authority due to their high-quality content and backlinks. They are often considered the best sites to get backlinks from because they are highly trusted by search engines such as Google. Examples of PR9 websites include Google, Facebook, and Twitter. However, Google has discontinued PageRank score as a metric for ranking websites, so its relevance has decreased over time. Instead, Google now focuses on factors like relevance and content quality to determine the ranking of a website.