I am seeing a lot of individual complaints that sites that showed up yesterday no longer show up. The folks at WebmasterWorld are claiming that the search results landscape has changed for the SERPs they track.
One webmaster said:
Seeing a fairly big change in the SERPS in the last 24 hours, however even though positions are down for us traffic is up 30%.
Have you seen changes? I am not sure if this would be considered a Panda refresh or just a general update or nothing at all. I am going to ping Google to see if they can give me more information.
Update: Google told me there is no Panda update happening right now. Nor is there a data refresh. I am not sure why so many people are seeing changes to the search results, when Google told me it is not Panda, nor is it anything else on their end.