The “feed” has become a social staple of many online products. The stream of limitless information displayed in a scrolling interface makes for a compelling reward of the hunt. The Twitter timeline, for example, is filled with a mix of both mundane and relevant content. This variety creates an enticingly unpredictable user experience. On occasion a user might find a particularly interesting piece of news, while other times she won’t. To keep hunting for more information, all that is needed is a flick of the finger or scroll of a mouse. Users scroll and scroll and scroll to search for variable
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