Knowing that 64 percent of his online friends are male does not help either—more so because only 57 percent of Facebook is comprised of women. When he lamented these facts (on Facebook of course) he was asked the obvious question: “Did you go through your friends list and count?”

Well, no. The number-crunching comes courtesy of Wolfram|Alpha, a sort of search engine for quantifiable facts. Begun in 2009 by Stephen Wolfram, a British scientist and entrepreneur, the online service serves up answers to queries by harnessing information from its own databases. It can compute things like the distance between the Earth and the Moon on your parents' first Valentine dinner, for example. Its latest feature lets people analyse their Facebook account for free. Enumerating and plotting the vagaries of one's online life is at times surprising. Your correspondent wouldn't have thought he was many times more active in 2011 than this year, in terms of status updates, sharing links, photos, etc (chart below).

 

Since the service began a few weeks ago, more than 400,000 Facebook users have let Wolfram|Alpha examine their digital bits—an outpouring of interest that caught the firm by surprise, says Luc Barthelet, Wolfram|Alpha's executive director. The company plans to expand into other "personal analytics" services. Mr Barthelet declined to be more specific, but it could well entail analysing users' email patterns and other social media behaviour.