Google Sidewiki

Google Sidewiki is a new browser sidebar from Google that lets users annotate or put comments on any web page on the Internet. These comments (Google calls them sidewiki entries) are public and therefore other Google Toolbar users visiting that web page may also read your comments.

For instance, Danny Sullivan left this comment on the Code of Conduct page that other visitors to that page may read and even vote upon if they find the comment useful. Google also maintains a sidewiki leaderboard to highlight the top users of their product.

To learn more about Google Sidewiki, please watch the following screencast videos: