I added a field to link to your Goodreads profile, if you have one. You can access it from Profile -> Modify Profile -> Forum Profile, and the field is at the bottom of the page.
Your Goodreads profile is going to look like
http://www.goodreads.com/user/show/3639026-bob You'll want to add everything after the last "/". In my case, it'd be 3639026-bob. Enter that in the new field at the bottom of your profile page, and you'll get a new little icon in your user profile. People reading MWF can then see what books you like and read.
Now that I've got the process down, I should be able to add some other fields.