Fotiman - 7:44 pm on Nov 25, 2009 (gmt 0)

@D_Blackwell, no, you shouldn't <span> a class in an attempt to replace <b> and <i>. Those 2 tags are purely presentational. Instead, you should use tags that have semantic meaning. Therefore:
<b> becomes <strong>
<i> becomes <em>
This will give you the visual (presentational) as well as the semantic meaning.