I spoke at the 2010 Catalyst Conference in San Diego on July 29th. The conference hashtag is #CAT10.

The slides are here:

A few days before the conference started the #CAT10 twitter social network map looked like this:

26 July 2010 NodeXL Twitter map of the connections among people who tweet “#CAT10” the hashtag for this year’s Catalyst conference.

This is the list of the most “between” contributors in the #CAT10 Twitter graph on July 26, 2010.

A few days later, as people began to arrive at the conference, the graph became far more dense and populous.

The network of #CAT10 mentioning users in Twitter has become much more dense, with more people and more connections among them as people reply, retweet, follow, and mention one another.

While the core people in this list are similar to the list generated a few days earlier, several people have shifted position.

Filtering the graph, we can remove all but the most between people to reveal the core members of the community.

These people are likely to play an influential role in the #CAT10 community.