To edit your Causes profile, go to the Edit Profile section of your Account Settings. You can set a vanity url for your profile (I'm causes.com/syd), customize your background color, and write your bio so that visitors know a little more about who you are and what you care about.
To hide your profile so that only your Facebook friends can see it, head down to the Privacy section of your Account Settings. The first thing you'll see is the ability to either allow everyone to see your profile, only allow your Facebook friends to see it, or only allow you to see your profile. Adding these restrictions (only Facebook friends or you) will remove your Causes profile from our search results and from Google search (once their cache clears, about every 3 weeks).
To uninstall the Causes application from Facebook, access your Facebook Account Settings and remove Causes from App Settings.
To delete your Causes account, which will remove your name and photo from all causes and actions, delete your profile and hide from search engines, just click on "Delete my Causes Account".