I have added these two features to the board:
Spell Check - By default it will automatically check your spelling whenever you post. To disable this, go into your profile and turn OFF automatic spell checking. You will still have the option to check spelling using the Spell Check button.
Watch This Topic - There is now a link at the bottom of each page that you can click to watch a topic. From then on, whenever someone replies to that topic, you will receive an email. To turn it off, you just click on that link again and it is disabled.