my blog

Use an advanced google search to locate Drupal Websites which allow users to comment with links. The important thing is to search within the context of the term you are optimising for.

http://www.google.com/search?hl=en&safe=off&q=%22street+furniture%22+environmental+%22Allowed+HTML+tags%3A+%3Ca%3E%22&btnG=Search

I discovered this technique from Ben Finklea's blog. The original article adocates the intitile operator but for many terms there just isnt enough content out there. This is a great method and really helps you to build relevant links to your pages.