I am confused as to why this has happened. My home page has had a PR4 for some time now, and my internal pages (around 1,000) have had PRs anything from 1 to 3. But in the past month or so my internal pages have no google rank at all . my home page is still ranked... but all other pages have lost their rank...none are ranked... just an empty white spaced PR bar. Any idea what would have caused this also for the past 2 months google search results for my main keywords seems to have reverted to results that were similar to over 4 months ago.... 4 months ago, for my main keywords i was ranked page 1 and 2 in google for around 2 months...it seemed that google had implemented a new search algo and did a big reshuffle of site rankings.. for which i benefitted for 2 months. but then in the past 2 months google has reverted back to the old algo and now search results for keywords is the same as it was over 4 months ago. whats going on ? would appreciate some opinion on this. thanks