This was the only 2.0 item I've come across so far that I really can't see the usefulness of. Maybe I've lost my big picture hat, but I came away from this exercise not knowing what I had just seen and read about. It just didn't click with me how we could incorporate this into our daily reference life. I'll chat with some of my colleagues and find out what they think - maybe they can help me find my missing piece! I've also put on my to do list for November to come back to a few of these sites and look at them with a fresh eye. In the meantime, I'll try to find my hat!