What I love about
SEO is that it is not an Art or Science itself. And I suppose no one in this thread or elsewhere will agree to disagree with me.
SEO is just Advanced HTML with appropriate implementation (accessible & semantical markup/structure), basics in Web Semantics (XML), Robots rules and Apache of IIS configuration.
If you know all that, and you read and follow the search engines guidelines without trying to find out what can't they check at the moment, you can define yourself as an
SEO.
Something like this:
Lets leave the off-page optimization stuff like PageRank, IBLs, PPC and Co, to the SEMs here.