Systems of engagement are different from the traditional systems of record that log transactions and keep the financial accounting in order: They focus on people, not processes (see the Figure).

FORBES: A Billion Smartphones Require New Systems Of Engagement

SingShot is karaoke that has gone truly global, as users from all over the world log-in and record their own rather special versions of many popular tunes from a number of different genres.

BBC: SingShot website

Employees of its customer companies log on to the GlobalExpense website, record their expenses on standard forms and put their receipts in the mail.

ECONOMIST: Men and machines

Jurors have also been told by the prosecuting barrister Martin Goudie that phone records, emails sent by the businessman, fuel purchases and weather conditions also appeared to support the unofficial record rather than the official log certified by Mr King.

BBC: Rudding Park death flight pilot 'mad keen' on flying

Another feature of the evening will be the ability to record who you have met and spoken to during the Twestival to create a log of the night, or a "social graph".

BBC: Tweeters set for Twestival time