The private, personal character that makes online social networks appealing to people looking to stay in touch with friends and family is also leading data protection advocates from around the globe to criticize the sites.
Armed with some of Europe's most wide-reaching data protection laws, critics in Germany have accused social networks and other online sites of collecting and making commercial use of personal information without members' explicit permission - as required by law.
Google and Facebook are both under investigation in Germany, as well as other countries, for their privacy and data retention practices.
Deutsche Welle looks at the actions being taken against a number of Web sites and how Germans are using the Web and social media.
A spacecraft has ended a mission to map the dust and gases surrounding the moon with a planned kamikaze crash. Scientists believe the crash left no debris on the moon.
Google has purchased the company Titan Aerospace, a manufacturer of solar-powered drones. The Silicon Valley tech giant wants to harness drones to bring Internet access to people living in remote locations.
Rivers are a lifeline for Myanmar's people and the environment, but a host of hydropower dams are to alter their flow. Many fear the development could spell disaster for communities and biodiversity.
In Bangladesh, the battle for resources and the construction of dams and levees are depleting fish stocks and pushing river dolphins to the brink. Now, local communities are fighting back.