SEO » SEO, PPC & AIO Guides » Essential Guide to SEO: Master the science of SEO » Chapter 4: HTML Code & Search Engine Success Factors Chat with SearchBot These elements in the Periodic Table of SEO ...

The belief here is that the keywords you use in H2-H6 subheadings are more heavily weighted in Google’s algorithm than words in plain text and that tags are therefore a ranking factor of their own.