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.

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

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