Search engine optimization (SEO) is an industry and practice in constant flux. As search engines continue to work toward improving the results returned for their users, marketers must continue to optimize websites and create relevant content to build relevancy and authority. Check out these awesome infographics for some visual instruction and information about SEO: 1. Order of SEO Operations 2. SEO Tactics 3. Search Engine Marketing ROI 4. The Visual FAQ of SEO 5. SEO vs. PPC 6. SEO Check List 7. SEO Factors 8. Long Tail SEO 9. SEO ROI Is King 10. Local Search 11. The Social Media Effect 12. SEO Spider Trap Reference:   12 Amazing SEO Infographics