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.
Wireless Internet just turned 15 years old. But surfing in public presents gaping security holes - as evidenced by a recent experiment. Why? And what can be done to enhance WiFi security?
Everyone wants to join Ello. Despite being launched in March, the social network has been causing a huge stir in recent days. Invites to the network are now even being sold on Ebay. But the platform has its critics.
Religious leaders met at the Interfaith Climate Summit to discuss how to tackle climate challenges from a faith-based perspective. After all, there is no such thing as believing in climate change, says Guillermo Kerber.