His name is @newmediajim. Or to be precise, Jim Long, a photojournalist for NBC News who joined Twitter on October 24, 2006. Today, he has over 42,000 followers — more than many on-air correspondents. “I would wager that I was the first network television news presence on Twitter, and would challenge anyone to prove otherwise,” he tells us. After punching up a few of my early-adopter friends on Tw