Just a quick reminder to anyone out there that may not know.. Enabling the Visual Editor in your User Profile settings gets you access to both Visual and HTML editors in the Write/Edit Post screen. Just click on either tab above the toolbar to toggle between modes. So you can write your posts in HTML and then jump into the Visual Editor to take advantage of the new Linking tool, which makes adding links incredibly easy.
In otherwords, match what you see when creating/editing a Post or Page in the WordPress visual editor to what you get when you actually publish it. It's easier than you might think! Basically you can declare a special CSS file that the visual editor will use to render itself while you are editing it. If the styles in that CSS file match the styles in your live theme's CSS file, you are straight up WYSIWYG (What You See Is What You Get).
WordPress defaults to a WYSIWYG editor when composing a new Post. Of course WYSIWYG is a bit of a misnomer. What you "get" when you publish that post is dependent on the template and the CSS in place in the theme. In fact, WordPress doesn't even call it WYSIWYG, they call it the "Visual" editor. In fact, most editors of this nature these days go to length in telling you its a markup editor, not a WYSIWYG editor.