Notice anything different about the results of your Google search lately? Last week Google underwent a major revision to its search results page. I first noticed the change when I did a search yesterday and the first result was a Twitter feed - not very helpful. More information about the changes are described here. The primary change is that:
"Google is emphasizing the menu of search options that had previously been hidden on the left-side rail of the search results pages. First unveiled in May 2009, search options required a searcher to click on a "show options" link at the top of the page. Now they will be permanently affixed to the left rail, and Google will surface different search options based on whether they are relevant to the query."
This change also changes the location of the Wonder Wheel, FYI.