How to make a simple Facebook canvas app?

What privacy settings should a guy have on his Facebook to make sure his Facebook profile data doesn't end up on the Lulu app?

• Apparently, the http://en.wikipedia.org/wiki/Lulu_(app) can technically extract some guy's Facebook profile data if the privacy settings are not too tight. I'm particularly referring to the questions raised in this article: http://www.digitaltrends.com/web/terms-conditions-lulu/

• Answer:

  Depends on what you mean by "profile data". Certain things on your profile are considered public. That includes your name, your profile pic and your friends list. Other items, like your phone number (if you added one), your email (if you added one) and pages you like (if you liked any) are either public, friends-only or private, depending on what you selected (default is friends-only). Facebook Connect does allow the passing of email address, specifically for sending you direct messages from the app. It isn't allow to share that directly with others. I don't find that particularly sensitive, since it makes sense to opt-in to communications from the app developers when they have updates and so on. But this article you liked to has some inaccuracies and is making a big deal about standard behavior for Facebook profile data. Your name, profile pic and friends list are public specifically because people thinking of friending you have to know whether you are a friend or not. You need a minimum of information for a profile so your acquaintances actually know whether the account is you or not. And since pseudonyms are not allowed, and profile pics don't have to be you (or human at all), the best way of checking is to see if you have friends that overlap. None of this is new. Facebook started 7 years ago with the same set of data being public. Frankly, I think this article is rabble-rousing and trying to act as if this is a big deal. It isn't.