What is the best way to use Ultimate Facebook?

Greetings,

I have some questions on the Ultimate Facebook plugin. I have set that up under Network Admin, network activated, created app, connects fine, etc. My intent is to have my app available to users if they want to use it (so they don't have to create and configure app and Facebook settings) OR they can setup their own app and settings. The problem is when my app is available to them, they can see my API key and secret key, which doesn't seem like a good idea to me. If I force them to use my app, then the Facebook plugin does not show as an option in the member sites dashboard. So what is the best way to use this plugin? And how could member sites take advantage of my app setup if they cannot see the Facebook option in their dashboard?

thanks!