It’s often claimed that there’s no such thing as a free lunch, but still – espcially and increasingly in this digital age – we are daily using en masse products and services that we consider to be free. Or at least where we don’t have to part with some of our dearly beloved money in exchange for the right to use those products or services. Some examples from the digital world include social media, like Facebook and Twitter; e-mail services, like Gmail or Hotmail (yes, I know, the consumer version is also called Outlook now, but everyone still refers to it as Hotmail); free antivirus; free search engines, like Bing or of course Google; free return shipments for online orders; free wifi in hotels, bars, etc.

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