"At Twitter, one thing that drives us is our desire to make a lasting impact as a company. Being a force for good is at the heart of that mission. Looking outside the walls of Twitter HQ we see lots of good stuff happening all the time, which invokes an incredible sense of hope that keeps us going.

The open exchange of information is just beginning to become an everyday part of how the world communicates. As folks like you spread positive knowledge through the platform, we'll be collecting it and highlighting good social movements that you might want to get involved in. So drop in every once in a while to see what's happening."

"Online social networking is viewed by many as the next new paradigm in personal, professional and organizational networking and marketing. (Social media are the tools that people use to do social networking, such as Facebook, LinkedIn and Twitter.) The following sections first give a broad overview of the movement of social networking, including basics about each of the most popular tools. The next section describes how to use the tools for personal, professional and organizational networking and marketing."

"For better or worse, the Internet has become an integral part of life for most Americans. On the negative side, interconnectivity has spawned new breeds of crime, such as cyber stalking and phishing, causing new headaches for law enforcement, who must remain a step ahead of today’s tech-savvy criminals. On the other hand, the increasing sophistication and improved integration of social media have also created unparalleled opportunities for law enforcement agencies to connect with their communities in innovative new ways.

A September 2010 International Association of Chiefs of Police (IACP) survey revealed that 81 percent of law enforcement agencies interviewed now use social media. However, while 62 percent report using tools such as Facebook to aid in criminal investigations, fewer than half acknowledge using social media for crime prevention. Many experts believe the social media sphere holds enormous potential for law enforcement crime prevention units and groups such as Neighborhood Watch.