Josh Bernoff pulls no punches: "Let's be clear. Sidewiki is a land grab — Google has now set up real estate on every single Web site, for commentary from the masses." He offers practical advice: stop whining and claim your site. He provides a link to a step by step explanation of how to claim your site.
"It is important to know that as a website owner you can claim your Google Sidewiki space: and it will always appear on top of the comments." Detailed explanation of how to claim your Google Sidewiki