noun.

A knowledge worker or Web user whose free or unpaid Web labor is incidentally or directly responsible for the production of value. The digital voluntarian’s work (e.g., user-generated content) may be driven by a politics of affect (i.e., desire or satisfaction arising from one’s belief in the merit and even necessity of one’s work as a form of participation and influence, especially if the work is political or aesthetic in nature) and is thus easily exploited by the website, service, and/or company that summons the contribution. In many instances, the company would not exist without the digital voluntarian and user-generated content.