Another new feature of google search, google instant preview. With google instant preview you can see the visual preview of the sites on the search result list. If you want to to see the thumbnail you just need to click the magnifying glass at the end of title of one of the search results.
Now you can see where you're going and decide whether it's the site that you are looking for.
With google instant + preview searching Is fast and easy.
it seems like its not working on the latest beta version of Firefox..