Google News, which has long relied on automation to deliver news content from countless providers, has announced a twist in its algorithm: It will now recognize "featured" content among the tens of thousands of stories it delivers every day. huffingtonpost.com/2011/09/25/google-news-algorithm_n_980064.html seomoz.org/google-algorithm-change
I also found changes of Google. I am not confirm whether changes of my websites has comes due to algorithm or due to some websites changes but I found some websites having good in ranking and some website has lost their keywords.
Changes are not always good . The Google are not easily giving rank to new website and the old website are not getting new ranks update.
well they are not always good i agree; but on the other hand a well build site will always stay on top regardless of things!
Moreover the recent updates from Matt Cutts also states that the websites using too much advertisement will also be sacked if they don't lessen it.
Google makes more than 500 changes in last 1 yr.Now introduce panda a algorithm for duplicate content issue.