Computer sharing loses momentum

The family of ‘@home’ volunteer computing projects is growing ever more diverse. Spare time on a personal computer can now be donated to anything from finding alien life to crunching climate models or processing photos of asteroids. But enthusiasm is waning. The 47 projects hosted on BOINC, the most popular software system for @home efforts, have 245,000 active users among their 2.7 million registrants, down from a peak of about 350,000 active users in 2008.

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