Well, good point, but I can't imagine it would be <i>that</i> hard, and they'd have to do it anyway for HTML5, which does indeed support svg inside text/html.<p><a href="http://www.whatwg.org/specs/web-apps/current-work/#svg-0" rel="nofollow">http://www.whatwg.org/specs/web-apps/current-work/#svg-0</a>