It's not that easy to create. That's why you'll notice that there are also no links to the BBS from the resort reviews and the TUG Advice section.
Two easy alternatives:
1) When accessing the classifieds from the BBS, place your pointer on the classifieds link, right click on the link and then click on "open in a new window". Then you'll still have the BBS page open and can simply close out the classifieds window when you're done.
2) Add the BBS page to your browser's "Favorites". Then, you'll never have to type the URL again!