If you don't know what Facebook groups are, there's a good chance you haven't spent more than an hour on Facebook. However if you are a rare exception, we thought it would be useful to explain groups. According to Facebook, groups are "for members of groups to connect, share and even collaborate on a given topic or idea". While the company continues to make a distinction between groups and Facebook Pages, we see these products eventually merging over time.
How to be a data journalist Data journalism trainer and writer Paul Bradshaw explains how to get started in data journalism, from getting to the data to visualising it * Guardian data editor Simon Rogers explains how our data journalism operation works
Those concerns about privacy on Facebook have caught the attention of the U.S. Government: Congress recently sent Facebook an open letter asking the company to explain the disclosure of user identities to third parties (as originally reported by the Wall Street Journal), and how the company plans to address this issue. James Clarke, senior consumer technology analyst at Mintel International, makes very clear what's at stake: "It's in Facebook's own interests to provide a safe environment for users to enjoy; the value of their business depends on it."