איגנוסיס קידום אתרים באינטרנט בע"מ — specializes in bringing relevant traffic from the major search engines to its clients' web sites.
WebmasterWorld — news and discussions for the web professional, with a strong focus on search engine marketing.
SearchEngineLand — Danny Sullivan's new hub for news and information about search engine marketing, optimization and how the major search engines work for searchers.
Relevant Traffic — prominent European search engine marketing firm.
eGnosis — international web site promotion.