The International Association of Chiefs of Police (IACP) recently launched an entire website related to law enforcement's use of social media tools and resources - www.iacpsocialmedia.org
The new Center for Social Media has all kinds of information on planning and implementing Web 2.0 and social media tools for your agency, including case studies, white papers, directories, and more. Be sure to take a minute to check it out by visiting www.iacpsocialmedia.org