I don't know how many of you have heard of Newsvine but if you haven't let me introduce you to it (if you have skip to the next paragraph). Newsvine is a relatively new news site. What separates it from other news sites is its use of AP news stories and user submissions. Basically every news story that appears on the AP is automatically posted to Newsvine (they suggest that stories will appear there before other place because of lack of editorial intervention). Users can also "seed" stories from other web sites on the "vine". Finally users can also write...