I see folk like to "spice" up their posts in the forums, so I would like to suggest adding a "Posting Toolbar". It can be placed at the top of the advanced reply box, quick reply can remain unformatted. This way folk won't have to remember codes, use other sites/methods for spell checking or spend all day making sure their post looks right. They can be drop downs, toggles or just a one time deal where you click the button and it enters the tag and you edit it.
Just a suggestion!
I now return you to your regularly scheduled day, already in progress!