DtG: When did useful hints and tips become "life hacks"?

When the whizz kids of the City of London let their work jargon spill out in coffee houses. Personally, as someone who used to code for a living (often having to butcher somebody else's kludgeware* into something sensible in the process), I'm glad the positive senses of "hack" are being noticed again.

* Kluge: a crock which works. The English spell it as "kludge", which comes from "kludgie" -> midden.