Home Page PR goes from 4 to 0?

[gogame]

one of my sites gets pr 4 at the beginning of 2008,but dropped to 0 in the last pr adjustment of google at the end of April.

something along with it:
site indexed by google went down,no backlinks in google, but more than 1,000 backlinks from yahoo,what happened to google with my site?

besides,same problem at another site,which pr turned to 0 from 3.

[tedster]

Check out this thread: Page Rank Update - April 2008 [webmasterworld.com]. You'll see you have lots of company. In some cases, Google has lowered toolbar PR for sites they feel are involved with manipulating backlinks, including buying and selling. But that doesn't seem to explain every case.

Most experienced webmasters seem to agree - the thing to watch closely is your traffic and rankings, and not the toolbar. Here are some relevant threads in the Hot Topics [webmasterworld.com], which is always pinned to the top of this forum's index page.

PageRank FAQs [webmasterworld.com]
2008 - Does Google PR still matter? [webmasterworld.com]

[dmje]

Every one of my indexed pages had pr of some kind until just recently.

I used a mozilla addon that shows pr and did a site command for my site and not a single one of the pages in the site command had any pr, the tool either showed - or a zero, for every single page. I dont get it, my links havent changed much, added a few here and there and deleted a few here and there. Stats are still good, still ranking well for my search terms accordint to WMT queries.

Just dont understand why all the pr would all go away at one time, its probably just a bug of some kind but its driving me nuts...

Ideas!

[edited by: Robert_Charlton at 2:20 am (utc) on June 7, 2008]
[edit reason] moved from another location [/edit]

[Robert Charlton]

dmje - As tedster indicates, this has been a common glitch in a non-critical Google reporting function. It might, or might not, be deliberate on Google's part.

...not a single one of the pages in the site command had any pr, the tool either showed - or a zero, for every single page....

You're dealing with a number of reporting functions here, so the problem might be due to a combination of factors. The Google site: command itself has been having issues for many months now.

Have you tried looking at PR when you browse through your site page by page, rather than with the site: command?

There's a discussion currently going on the Yahoo Search forum which has elicited two responses from Google's Matt Cutts which might shed some light on at least one set of factors that can cause Toolbar PR to disappear for the user, yet to be OK at Google.

Yahoo Directory Gray barred?
[webmasterworld.com...]

...It looks like it's just a matter of canonicalizing upper vs. lowercase as to why some of the subdirectories look the way they do in the toolbar. I just wanted to reiterate that the Yahoo Directory has plenty of PageRank in our internal systems.

[edited by: Robert_Charlton at 2:49 am (utc) on June 7, 2008]