Siteslike opened its doors to the public on the 4th of december in 2008, since that time we've came a long way and much has changed (for the better). We were the first to introduce a solid database of similar websites, with the years and even more during our latest major upgrade the quality of our index has been improved dramatically.
It just does! Seriously that is the answer, it just works because we have invested enormous amounts of time and effort to cook up a unique way to display similar content. Many factors are taken into consideration when it comes to linking similar sites together, beside our 'super secret, hush, hush' algorithms we make use of known and readily available information like global reach, page rank, keywords and user input.