I'll take a Sidewiki of Google, please!

What an amazing idea! Google has come up with a sidebar that allows you to contribute or read helpful information that you or anyone else has added to a web page. You gain expert insight, get helpful tips, background information, and added perspective on the topic you are researching. It's like having a personal advisor giving you helpful hints. I am in the process of downloading Sidewiki and I will report back on my thoughts.