In our tmes, a growing interest of organizatons, including also the public ones, in crowdsourcing, can be observed. It enables to acquire knowledge located in virtual communites. However, despite many benefts, crowdsourcing initatves very ofen fail. Therefore, a need for their evaluaton is recognized. Nonetheless, in the subject literature, a shortall of criteria and methods of evaluatng crowdsourcing may be observed. The existng proposals do not ensure a comprehensive picture of crowdsourcing, and they do not take into account its multdimensionality. The artcle is intended for a presentaton of the ways of evaluatng crowdsourcing and an original proposal of a list of indicators, which may be used for evaluatng crowdsourcing in public organizatons. The artcle presents the original proposal of actvites, by which it is possible to assess the degree of implementaton of the adopted tasks and determine the level of obtained crowdsourcing results. The conducted research allowed to recognize that it is possible to measure crowdsourcing results using quanttatve and qualitatve indicators. A prerequisite for selectng the appropriate means is frst of all to indicate the purposes for which crowdsourcing should be used.
Keywords: crowdsourcing, efectveness, measurement, public organizatons.