when they were not told the purpose of their task. However, of those who completed the task, quality of output did not depend on the framing. Motivation in crowdsourcing is often a mix of intrinsic and extrinsic factors. In a crowdsourced law-making project, the crowd was motivated by both intrinsic and extrinsic factors. Intrinsic motivations included fulfilling civic duty, affecting the law for sociotropic reasons, to deliberate with and learn from peers. Extrinsic motivations included changing the law for financial gain or other benefits. Participation in crowdsourced policy-making was an act of grassroots advocacy, whether to pursue one's own interest or more altruistic goals, such as protecting nature. Participants in online research studies report their motivation as both intrinsic enjoyment and monetary gain. Another form of social motivation is prestige or status. The International Children's Digital Library recruited volunteers to translate and review books. Because all translators receive public acknowledgment for their contributions, Kaufman and Schulz cite this as a reputation-based strategy to motivate individuals who want to be associated with institutions that have prestige. The Mechanical Turk uses reputation as a motivator in a different sense, as a form of quality control. Crowdworkers who frequently complete tasks in ways judged to be inadequate can be denied access to future tasks, whereas workers who pay close attention may be rewarded by gaining access to higher-paying tasks or being on an “Approved List” of workers. This system may incentivize higher-quality work. However, this system only works when requesters reject bad work, which many do not. Despite the potential global reach of IT applications online, recent research illustrates that differences in location affect participation outcomes in IT-mediated crowds. Limitations and controversies At least six major topics cover the limitations and controversies about crowdsourcing: Impact of crowdsourcing on product quality Entrepreneurs contribute less capital themselves Increased number of funded ideas The value and impact of the work received from the crowd The ethical implications of low wages paid to workers Trustworthiness and informed decision making Impact of crowdsourcing on product quality Crowdsourcing allows anyone to participate, allowing for many unqualified participants and resulting in large quantities of unusable contributions. Companies, or additional crowdworkers, then have to sort through the low-quality contributions. The task of sorting through crowdworkers' contributions, along with the necessary job of managing the crowd, requires companies to hire actual employees, thereby increasing management overhead. For example, susceptibility to faulty results