Facebook: Application as Page Tab issue

Andreas,
Sorry for the delay in getting to this post.

For the reveal page, we simply show one article from your site in a special view. You can see it directly on your site by going to:
index.php?option=com_content&view=article&id=XX&tmpl=component

In this view, depending on how your template is setup, all the styles may not work immediately since some of the container or wrapper divs may be missing. You'll need to style this page (either in the article or through new styles in the template) to accomodate for it not being shown in a whole page.

Hope that helps explain, but if you need anything else, let us know!
Alex