Google sideWiki: a common place to share your views on a web page with others who visited it earlier.

The cool new feature from google now lets you share your views and comments about a web page on a common sidebar located alongside any web page. Install the new toolbar from here and look for the sidewiki button on it. Now when you are on a web page and would like to know what other people (who have visited the page earlier) think about it, just click on the sidewiki button on your google toolbar and it will popup a sidebar to your left containing comments and user views specifically for that page. You can also join the discussions and leave your reviews about the page through the same sidebar. Your google account will serve as your unique identity here. This lets the web surfers find a common place to discuss about the web pages individually and review the quality of the content the page offers.