The mediawiki.skinning.interface styles <q> as italic for IE7 and below:
/* IE 6 and 7 lack support for quotes aroud the <q> element ('::before' and '::after' pseudoelements, 'quotes' property). Let's italicize it instead (using the star hack). */ q { *font-style: italic; }
This wasn't an issue until a year ago when <q> was actually whitelisted and began to be used. Italic is simply the wrong style for quoted content. There is no way to add quote marks, so plain style is the best here.