Since I’m on California time and wide awake, figured I’d add to the great Twitter visualizations posted by @coffee001.  The first visualization shows the relationships between Twitterer/THATCampers coming this weekend.  As this is the third THATCamp at CHNM, I’m not surprised by the density, but you can also see a lot of nodes on the periphery as the network continues to expand. Note that red lines are reciprocal “follows,” blue lines are one-way.

In-network relationships for THATCamp attendees as of May 18, 2010

The second and third visualizations are before and after the Great Lakes THATCamp in March. You can see how the events increase the density of the networks.

In-network relationships prior to first Great Lakes THATCamp, March, 2010

In-network relationships several weeks after the first Great Lakes THATCamp, April 2010