Everyone,
I've added a new feature here on the board to let you set a default font and font size for your posts. If you will go to your User CP and click Edit Options, near the bottom of the page are two options for setting the default font size and font that your posts will show up with. This can always be overridden when you are actually posting your message, but it will let you customize your options a little more.
If you have any problems, feel free to let me know.
TDF (Chris)