When I copied the name a of forum from the left column of the post listing (e.g., "Using jQuery Plugins" in large, bold letters) and pasted it into the WYSIWYG, it showed up normally (screenshot_09.png), but when I published my post, the copied text and everything following it showed up bold from the copied styles (screenshot_08.png).

A clear formatting button would be nice, but if the WYSIWYG reflected the styles correctly that'd be even better. :)