Social sites work to better world, one click at a time

Social sites work to better world, one click at a time: "All the networks, homemade videos and blogs have made the Web a center for socializing, not social change. But a slew of startups are using the tech tools and social dynamics that have become the norm online to tackle real-world problems.

Whether it's through a social network that helps a Nicaraguan woman get a loan to expand her business selling dyed rope or a Web site that uses video, podcasts and other tools to turn a social activist into an Internet celebrity with an army of active followers, a growing number of people looking to make changes in the real world are going online."