I'm quite sure most of us have friends on Facebook and other social networking sites like Twitter that we are only somewhat distantly familiar with or perhaps don't really even know at all.
Dowries have been illegal in India for half a century, but they're still very much part of life. Even now, women are frequently murdered - often by burning - for bringing too little with them when they marry.
The US Department of Homeland Security (DHS) is now "monitoring" a number of popular websites, including Facebook, Twitter, WikiLeaks, the HuffPo, Drudge, JihadWatch and Wired Danger Room.
Be careful who you friend: an Israeli researcher is claiming that international terrorist organizations are increasingly focusing on social media as a way of drumming up support.
So not only is Facebook one of the most popular sites to visit from your computer, it's also got just about the highest penetration rate among mobile users.
A US-based security think tank that recently fell victim to a hack and extract attack is warning subscribers they may be targeted by cyber criminals for voicing their support on Facebook.
Facebook's agreed to make several changes to its privacy policies following the publication of a critical report from the Irish Data Protection Commissioner.