A suicide prevention organization launches a free app
When person you follow tweets phrases such as "tired of being alone" or "help me," it alerts you
The organization will also help reach out to those affected
(CNN) -- Suicide prevention organization Samaritans has launched a free app that flags disturbing tweets and sends an alert to friends.
The app, Samaritans Radar, is currently available for Twitter users. Once downloaded, it sends an alert to your email address when a person yo
