Thanks to the hard work of forum member deaner225 and some prodding from myself, we've got a new feature on the forum that as far as I know makes us the first forum to have gmail style hotkeys for navigating through the forum without using the mouse.
For instance, once you enable the feature, you'll see a little caret next to items in the list:
At this point you can use the J and K keys to move the caret up and down, and then use the O key to open that thread, where the J and K keys will let you scroll from post to post. You can use the R key to reply (which puts the focus into the textbox), and then use the U key to return to the forum homepage. (all keys actually should be used in lowercase)
Instructions on how to enable (in your profile edit), as well as a full list of the hotkeys can be found here:
Of course you should keep in mind that this isn't for everybody, and since we just added the feature there might be bugs. It won't affect you if you don't turn it on, though.