Facebook now has over 250 million users; 120 million will log in daily. Twitter is up to 6 million users and is expected to double within another year. It is the new wire service, as demonstrated by the immediacy of news events finding their way onto Twitter: Mumbai, the Iran elections, the plane that went into the Hudson, the Air Force One flyover, etc. Twitter is a communication vehicle.

Don't abuse your followers. Send them substantive information.

There was also discussion of what #tcot (top conservatives on twitter) was all about. Now I know why Saul Anuzis used it all the time.

Coordinated action: It can mean a lot when a group of people all send a twitter message to a single state legislator or other person whom they wish to influence on an issue.

Virtually all reporters are on twitter now; you can communicate with them about stories of the day.