...feedback on empty review sites or no results pages.

For example, if a Google search is done on Canon sd880, a lot of empty review sites are seen on the result pages. Here is the screen shot of one of them:

In his recent blog post Matt says

that one must go through the Googles webmaster guidelines to know more about the spamming issues.

Here is how you can give your feedback:

• Go to Google's authenticated spam report form. Make sure that you have a Google account to sign in.
• In the Additional details section, write the keyword no results (all one word, all lowercase). You may fill other details as well.
• Also give an example of the url of no results found or empty review.

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