Here are updated statistics after Google’s latest PR update from the end of May. The stats were compiled from our database of 12,000 web directories at web-directories.ws.

Directory PageRank Statistics as of June 9, 2009

The drop in N/A directories is do to the major cleanup I performed, removing hundred of parked domains.

Directory PageRank again appears to be pretty stable.

The following factors may have affected these numbers:

• The N/A directories were reduced considerably this time because I manually cleaned up hundreds of directories that were parked.   I spent most of my time in the article category which had hundreds of dead links.  I will have to spend more time on indentifying these directories as they usually don’t get identified by our automated checks.
• Most of our submissions that we get come from brand new directories, meaning that we are constantly adding new PR0 and N/A to our database.
• I often go out of my way to add large networks of directories that are stored on the same IP (so that I don’t add them later without knowing their IP associations. More often than not these directories are still N/A or PR0 years after being created. I’m not sure if it something Google does or if it the fact that each individual directory is not really marketed much. It looks like Google is cracking down on these as I often see large blocks of NA PR when I do the updates.
• Since many of the directories are add by the editor of this site, the results cannot be considered random. The results of any given date can be skewed by the types of directories that were added in the previous 3 months.

As a result of the factors above, the  statistics produced are more useful when looking at long-term trends rather than the results of individual PR updates.