Interesting comment system- it will takeoff in a big way

This is interesting. This area needed legs and Google has provided it by launching Sidewiki. Sidewiki earlier had got bad publicity because some people believed it created lot of junk and too much useless information.

There are other competitors and one is Dotspots.

This product is in the nascent stage and it will go through a metamorphosis and will be very popular in the future because it is not tough to understand the concept and easy to use

in reference to: Official Google Blog: Help and learn from others as you browse the web: Google Sidewiki (view on Google Sidewiki)