How do you get a notification when a user with your app user updates their status

I'm trying to make a facebook app that needs to do something when a user updates their status. How would 开发者_StackOverflow社区I make facebook notify my app when a user updates their status?

I know this is possible because the twitter app updates your twitter status when update your facebook status. I'm looking to do something like this.

You could try the status.get function (It's Beta ATM), and poll.

You could subscribe to the user's Status' RSS feed.