While extolling the virtues of using Twitter to update your status (instead of Google Talk/GChat), I discovered this list of government agencies and public servants that use Twitter.

If you don’t know what Twitter is, see the video from Common Craft explaining Twitter in plain English.

Some that communicate information in unique ways include food recalls (care of the FDA), pandemic flu updates (care of the CDC), road condition updates from the Kansas Department of Transportation (for specific metro areas like Kansas City, Topeka, Wichita, and Garden City), National Terror Alert Response Center, and earthquakes and tsunami warnings.

Some big names (and agencies) include the Transportation Security Administration, Department of Homeland Security, NASA, Supreme Court, several states (Colorado, Idaho, Kentucky, Maine, Nebraska, Rhode Island, South Carolina, Utah, and Vermont), the Israeli Consulate, and CSPAN, among many others.