SEM Tool Bar

Dealing with concerns related to search engine marketing can be difficult, but when it comes to gathering stats, it doesn't get much easier than having them surface while you surf. And the SEMToolBar provides just that service. This toolbar shows up at the top of an open browser window, and the official description explains, "Transformed search engine results pages (SERPs) display keyword demographics and statistics at the top, and the results are numbered and annotated with useful data and links (such as PageRank, backlinks count, pages indexed,l ast cached date, a cached text link and more)."

http://www.seotools.com/semtoolbar/