Earlier I made a comment as to the problem with the term HTML semantics claiming that none presentational elements would make the term redundant. I also posited elements such as div and span which are considered non- semantics my are in fact semantics in the sense of meaningful.

A CMS publishing system is the best way to represent the tension. One theme is divs and spans with a CSS framework, the other is "well ordered" HTML layout. Both have a main element that the request content is purely into. Isn't THAT part of the page the semantic focus?