This is a very simple Twitter API app that allows you to turn retweets from all your friends off or on without having to toggle each friend's Retweet button. Twitter does not provide this functionality as a global setting.

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Please Note: I wrote this mostly for myself for fun. I have not tested this very much. I only follow about 30 people on Twitter, so I have not tested its scalability at all. I have no idea what will happen if you try to de-retweet hundreds of users at once. Good luck!