Input (grade 13): Biz Stone explains that all messages are instantly indexed and that "with this newly launched feature, Twitter has become something unexpectedly important - a discovery engine for finding out what is happening right now."
Output (grade 10): Biz Stone explained that all messages are instantly indexed and explained the results of the change. The Trending Topics has made Twitter something "unexpectedly important â" a discovery engine for finding out what is happening right now. "