Most search engines help you find information based on keywords. SimilarSiteSearch.com, however, takes any URL and returns a list of similar sites for you to browse.
SimilarSiteSearch is a mashup of keyword based searches and directory listings. Type in a URL, topic keyword or modifiers such as "in the UK" or "for business". The results are filtered by country, language, or tagged topic. If you are looking for the (fill in the blank) of (fill in the blank), this website has the answer.
Check out some of your favourite websites into SimilarSiteSearch and see where it takes you.