The power of collaborative effort, especially relevant to us Pittsburghers. People can report on the road and snow conditions on streets close to where they live.
In December, Facebook made a series of bold and controversial changes regarding the nature of its users' privacy on the social networking site. The company once known for protecting privacy to the point of exclusivity (it began its days as a network for college kids only - no one else even had access), now seemingly wants to compete with more open social networks like the microblogging media darling Twitter.