It’s a 224-slide presentation about social networks and it’s the first intelligent presentation about them that I’ve come across.
It also highlighted a current flaw I didn’t realize Twitter has. As in the presentation, I tend to group some of my Followers together for shared interests. But for me to address these people all at once with a tweet, I must waste many of the 140 characters adding their IDs one after the other. This sometimes means I wind up sending more than one tweet to address a group of people. Twitter should allow me to Group people. I could then use one Group ID and Twitter can explode that tweet out to the individual IDs and dispatch them.
Go read the presentation. It’s excellent!