'Twitter Stories': Tales Of Life-Changing Tweets (SLIDESHOW)

Sure, Twitter is aflutter with news of Kim Kardashian's divorce and Justin Bieber's baby mama, but 140 characters can be used for much more than commiserating over celebrity drama. Twitter can have a significant social impact.

At least, that's the message of Twitter Stories. A new site launched this week highlights the triumphs of social media with stories of small businesses saved, missing children found, and organs donated -- all because of a few tweets.

Twitter users are invited to contribute to the site themselves by sharing their own stories with a mention of @twitterstories or #twitterstories in a tweet. The site will be updated periodically to include the most inspiring of users' offerings.

Click through the slides below to check out Twitter's powerful potential: