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.
EU lawmakers are set to vote on a motion this week proposing the break-up of Google and other Internet firms. The move comes amid increasing political pressure on the bloc to curb their market dominance.
A Soyuz capsule carrying astronauts from three countries has docked with the International Space Station (ISS). Among those arriving on board is Italy's first woman in space.
Kruger National Park is home to the world's largest rhino population but it's also a hotspot for poachers. Park officials plan to sell some off Kruger's rhinos to game reserves.
Sparrows and starlings are disappearing at an alarming rate in Europe. Richard Inger of the University of Exeter talks to DW about what is behind the decline and what can be done to stop it.