TechSamaritan Twitter app may help spot friends at risk of suicide Worried about a friend who's been down and out lately? A new Twitter app warns users if their friends show tendencies of committing suicide. The app monitors people's tweets and uses a special keyword-searching algorithm.by Menchie Mendoza
Business TechTwitpic is dead but it's domain and photo archive will live on, thanks to Twitterby Nicole Arce
CultureTwitter to fund learning center for San Francisco's homeless in exchange for hefty tax breakby Cameron Koch