Twitter Web Client for Android: Weired question: Authorize SNS to use your account?

I've installed the latest version of the Twitter client for android and logged in. To my surprise, the screen displays the message (also shown in the screenshot below), asking me to authorize the SNS (Social Networking Site/Service) to use my account? I don't understand this question. Assuming SNS is used as a synonym for the Twitter service itself, then what is the "account" they are referring to. Obviously, the twitter service automatically has access to my twitter account, so are they talking about my Android account on my Android device, or perhaps the Gmail account corresponding to the e-mail I provided, which I doubt as such account uses a different password. It seems like Twitter is being intentionally vague here.

If someonecould kindly explain what the app is asking for in the screenshot I would be happy to know this. Thanks.