aakk9999 - 12:41 am on Jul 22, 2013 (gmt 0)
Similar sites can also be listed by performing the following search on Google:
For many sites the little green dropdown arrow in serps only has a link to 'cache' but in many there is also a link, or only a link, to a 'similar' option.
It has always seemed to me that it's random, although within industry/category
It is random to a degree. I think it shows how Google "understands" what the site is about. The SEO benefits could be:
1) Looking at the "similar sites", it can help you understand how Google sees/categorises your site. If a similar sites are way out or too broad to what you think it should be, perhaps the site is not focused/IA developed in a way that Google understands it the way you would want Google to understand it
2) If the "similar sites" shows bad neighbourhood, this *may* indicate a hack or perhaps a negative SEO and should certainly be investigated
3)A site may not have "similar" link (or "related:" search may not return any results). This may mean that Google is not able to categorise the site narrowly enough to show what it understand the similar sites are
For example, the search related:webmasterworld.com shows not only other SEO and Webmaster forums, but also searchenginewatch as well as googlewebmastercentral.blogspot.com, indicating that Google sees WebmasterWorld as a webmaster forum, but also as a site with SEO topic as well as a site that discusses Google.