BuddyPress.org

>>What are Buddypress filters? Should I enable them?

If you’re using BuddyPress, you don’t want to disable the BuddyPress filters. Debug options are just for development and 99.99% of the time you shouldn’t need to touch them.

>>What are these actions and filters? I see nothing about them in the settings area?

I’ve spent a great deal of time documenting everything extensively on the plugin homepage, often with examples. It already answers very many of the questions you’ve asked on here (including this one). Please make sure you’ve read it.

http://www.justin-klein.com/projects/wp-fb-autoconnect