I have lost a LOT of traffic because my site lost its SERP from page 1 to page 2 and also lost some PR. Mind you, I never bought or sold ANY link what so ever. I have nooooooo idea why this is happening! It's killing me literally and I am desperate to see a positive change right away cuz I believe my site is penalized but I can only imagine WHY!????
I lost two places for my site name... was number one before. Not a concern though because no one searches for that.
Google often updates SERPs multiple times during the day before and after the PR update. There must be a data refresh happening at intervals. This should settle down within 1-2 weeks.
Isn't it possible that you lost your SERP because other sites have improved their SEO/backlinks/etc more than you?
Yeah, it was good for me, PR updates for all my new websites. My newest went from zero to 4 and my SERPS are also going crazy. From #8 on the most important keyword to #2
For NOOBs, I believe Everflux, is the term used by everyone to describe the forever-fluctuating G SERPs created by G's process of spidering the web, indexing the pages, calculating links & true PR, re-appling the other hundreds of factors they look at, and then adding them to the search results, 24 hrs a day, causing movement of websites within the SERPs. But an algo change, that is a completly different story.