Now Google Toolbar is equipped with a new feature, Google Sidewiki which is meant to allow users to Read, Publish & Share Insights & related information in the sidebar, next to any webpage. Its really very useful to track how many people visit the same pages and look for the same information & get the information that is added by many others have done while searching the same.
Google Sidewiki, with the major aim to contribute helpful information to webpage visitors, appears as a browser sidebar, where you can also read and write entries along the side of the page & share them.
Google has implemented an algorithm that promotes the most useful, ordered & high-quality entries allows you to see the most relevant entries first.
Google Sidewiki as a feature of Google Toolbar, is now only for Firefox and Internet Explorer but it will be available soon in Google Chrome and elsewhere too.
Also, you can to start exploring the web with Google Sidewiki, visit google.com/sidewiki to download Google Toolbar with Sidewiki and contribute your own entries alongside pages on the web.