You know how alexa has website rankings, stats, etc. All of those stats are coming from alexa search toolbar. So your ranking isnt really accurate, because not everyone has the alexa toolbar installed or use it. But most us use google search engine. Google should come up with a tool just like alexa. I believe Google's rankings would be much better than Alexa's. Now google has pagerank but that doesnt really show how high you rank in traffic. They should stats like alexa.
No, it is also useless when google toobar adds the "global website ranking". For that it is true that it is impossible for everyone, every computer to install Google toolbar, so it is not scientific for the counting, so it is useless. Many webmaster have many ways of improving the Alexa ranking, and the ranking means nothing except for some certain big famous websites, I think.
Google also has information about traffic from their SERPs since they count every click on results pages. So they have the most accurate estimations, but they don't make them public.
Stupid idea if they would do like that rankings in Google will be like in Alexa easy with 30 friends instalink the toolbar or similar things That's why Google rulez and alexa suxxx big time
That's such a valuable data Google is gathering through Toolbar. They are not fool like alexa to give it away for free.