Search Engine Optimization Firms

1. Search Engine Marketing Professional Organization  (site info) Case studies, articles, events, and a comprehensive directory of search engine marketers. http://www.sempo.org/ 2. SEO Consultants Directory  (site info) Lists website optimizing companies worldwide by country, US state, and language. Add and review services. http://www.seoconsultants.com 3. SEO List  (site info) A directory of optimizing firms and marketing pros. http://www.seolist.com/ 4. Topseos.com  (site info) Directory of website optimizing firms with request for proposal submittal. http://www.topseos.com/ 1-4 of 4.