
Originally Posted by
frobn
As Jason said, it should be done for every page on your site and it should be consistant.
I take a slightly different approach than Jason and tie it into my design architecture by using the tags in a hierarchal structure. I use the h1 tag, with my main key word phase, at the top, either above the header or as text over the header image. I want the h1 text the first thing that the SE encounters in the html body. This is also why I seldom use flash in the header. Some developers go further to suggest, that in addition to the h1 tag, to put the text in an anchor to the main page. With CSS you can design the tags so the text will fit the style of your site. The h1 tag doesn't need to be followed by a paragraph but it could if it makes sense. I use h2 headings to broaden the focus. For example if my main key word is "my city Investment," I might have two h2 sub-themes "Invest in my city Luxury Homes" and "Invest in my city Preconstruction Condos." I sometimes follow the h2 heading with more descriptive content but more often I use h3 headings for paragraph text that further broadens the focus. Think inverted funnel.
Why go through so much bother and trouble? To lead the search engines to the semantic meaning of your site so it will be indexed and rated in the best possible light.