http://www.google.com/search?sourceid=navclient&ie=UTF-8&oe=UTF-8&q=blackjack
http://www.google.se/search?sourceid=navclient&ie=UTF-8&oe=UTF-8&q=blackjack
These are showing the same results. What is an example search where there are differences?
There are some slight differences between datacenters but nothing major that I can see.
The latest change is further evidence of a dramatic algorithm change. Google has always used filters of many sorts, but on the whole these results are obviously not being filtered in any special. They are being ranked much differently.