1. A computer-implemented method comprising: performing by one or more computers: selecting a word or phrase of a message that was not correctly translated from a first language to a second language; selecting a plurality of users from whom to solicit user feedback for the translation wherein each selected user has not submitted feedback more times than exceeds a quota for a first time period; sending a query requesting user assistance in translating the selected word or phrase to one or more of the plurality of users; receiving, from one or more of the users to which the query was sent, a respective response to the query; identifying one or more of the responses that are approved; and crediting a respective account of one or more of the users that provided the approved responses.