I know that individually, header tags (h1, h2 etc) and emphasis (em, strong) tags all give words a bit more 'weight', but how good are they combined? For example, take the following: <h3> <strong>SEO</strong> for your <strong>Personal Blog</strong> </h3> HTML: Do the strong tags help at all, or does it not matter since they are already in an h3 tag?
It's perfectly valid XHTML, and it's not pointless from a presentational standpoint because I've already set my header tags to non-bold by default anyways, what makes them stand out is the bigger text + underline. But my question had nothing to do with CSS or standards anyways.