Somehow the Google ‘Related’ search had escaped my attention until now. To use it, simply search Google for the word related, following by a colon, followed by the address of a website. For example, if you search for related:www.reinvented.net,
you will get a list of websites related to this one. Google describes this as:
The query [related:] will list web pages that are “similar” to a specified web page. For instance, [related:www.google.com] will list web pages that are similar to the Google homepage.