Twitter’s PageRank (PR) is down from 9 to 0

If you haven’t noticed yet, Twitter’s PageRank is now zero. There’s a minor PR update last July 16, 2011, and only few website owners noticed this. The last major PR update was last June 27, 2011. I also noticed PR6 and PR7 sites that are now PR0, such as Circolo Sormani, and other well-known websites and blogs.