I think there are a lot of changes going on with Google. You can see a lot of changes in ranking. Almost for all keywords..
And I have noticed on more thing. Posting Screenshot. And I have noticed this for many keywords.
PR Updates.. We all know Google have updated it's PR around 2 or 3 times within 3 months..
Few are reporting that Backlinks are again updated..
Indexed pages of two of my sites were increased two days back but now it again dropped.
I have seen new images indexed of my sites..
Had you noticed anything????