I was ran a WHOIS query today on a forum that discusses a niche product i'm about to sell. I used Domaintools and a part of the info it gave me was "related sites". There were three. One established company that sells these products (that is cunningly deceitful), One spammy as all hell web-site that sells them and the site of one dodgy merchant that sells a bunch of crap that is unrelated. So I'm wondering, Does anyone know what these sites did to get them listed as being "related sites" in domaintools.com's WHOIS ? How does it affect SEO ?