Twitter's experiment with-promoting its Favorite button seems to have worked, and now it's looking to see what else the button can do. The new experiment was originally-spotted by Yahoo's Drew Olanoff. Twitter already offers push notifications for tweets, albeit buried inside a menu on user profiles. But the company has frequently experimented with re-launching features, and favoriting is likely no different.-Most recently,-Direct Messages were resuscitated as one of Twitter's most prominent features after having long been regarded as an afterthought.



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