On June 1, the Napa Police Department, Napa City Fire Department, Napa County Sheriff’s Office, Calistoga Police Department and the California Highway Patrol launched a free  community information service called Nixle. Using Nixle, these agencies can notify residents in real time when there are public safety emergencies, traffic advisories, crime trends, safety tips and public safety agency special events. Like Twitter, messages are sent to cell phones, e-mails or other Web-enabled devices that allow instant access to information. Nixle allows subscribers to follow agencies in multiple locations, so not only can you follow your home area but also follow any area where you may have family or friends. As Nixle grows, more areas are added monthly. This service is completely free to Napa County residents, except for any charges you may incur for receiving text messages.