I am bit surprised that WordPress 3.0 is still confusing
<i> in its styling toolbar. Am I wrong to think that they should be kept separate? For instance, I do not believe
<em>Blade Runner</em> to be the correct markup for citing a movie title.
I seem to remember Joe Clark or Mark Pilgrim making that point long ago, but am asking today because the team at Web Style Guide seems to say that italics should always be done through semantic emphasis, even for conventional usage like movies and book titles.
I could not find any information on the support boards, except for the related thread that explains very well why embedded emphasis is not a correct practice—but that does not answer the question above.