1. Press the "Go to the application" button.
2. Give permissions to the application.
3. Go to the Queer Magazine Online site and login to link the accounts.
4. Add the tab on your profile.

This is what you have to do to add the new tab:

On the application page, you have to press the Go to the application button -under the application logo- (this button points to the URL of the Facebook application home, that is: http://apps.facebook.com/queermagazineonline/, grant permissions to the application, and click the link to login to the site. Once you've done it, you will be able to add the "QMO" tab to your profile.

You need to add the tab from your profile.
Just click the plus sign and search for Queer Magazine Online