Google Sidewiki

Google publishes a new service Google Sidewiki on 23 of Sep.

It allows users to comment and contribute on any specific web page, and can be sorted by the confidence according to users/authors’ feedbacks.

So far, Google Sidewiki is a part of functions of the ‘Google Toolbar’. It appears as a web browser sidebar. On the one hand, it allows users to contribute opinions for a specific web page; on the other hand, this information can be a reference for other users before they read the page.

Furthermore, the information can be shared/connected to other Web 2.0 tools such as Facebook and Twitter.

However, Google toolbar is now only for Firefox and IE, but Google is keeping effort to expand this service on its web browser: Chrome.