Check out the Digg Labs for BigSpy, a real time news feed good for creating a hierarchy around Dugg articles. Swarm shows how diggers swarm around active stories to make them grow.  It’s the same idea as YouTube’s Warp project.  These applications provide a great visual effect of the “bread-crumbing” nature of social media and content distribution.  

Also, YouTube co-founder Steve Chen said YouTube will venture into live video in 2008 during a conversation with Pop17 videoblogger Sarah Meyers.