Creating a Facebook APP doesn't give you an API Key anymore

As of today, creating a Facebook APP on Facebook doesn't return you an API Key anymore. They changed the Developer App yesterday (June 29th, 2011 )and you only get for your app an App ID and a Secret. Look at this page http://developers.facebook.com/blog/post/518/ for details.
So how can you configure a new app with Drupal fo Facebook module?
The easiest workaround is to use your App ID as your API key, because the new Facebook App doesn't need an Api Key anymore.
Hope this helps...