38. A method comprising: one or more computer processors programmed to perform operations comprising: obtaining an original text message in a first language authored by a first user: obtaining an initial translation of the original text message in a second language; obtaining a translation correction of the initial translation, wherein the translation correction is authored by a second user; calculating at least one metric associated with the translation correction, the at least one metric being based on a comparison of a language-based feature of the original text and the translation correction, wherein the at least one metric is based on the comparison of the language-based feature, and wherein calculating the at least one metric comprises determining a difference in a number of occurrences of a part of speech in the original text and in the translation correction; and determining an accuracy of the translation correction based on the at least one metric.
38. A method comprising: one or more computer processors programmed to perform operations comprising: obtaining an original text message in a first language authored by a first user: obtaining an initial translation of the original text message in a second language; obtaining a translation correction of the initial translation, wherein the translation correction is authored by a second user; calculating at least one metric associated with the translation correction, the at least one metric being based on a comparison of a language-based feature of the original text and the translation correction, wherein the at least one metric is based on the comparison of the language-based feature, and wherein calculating the at least one metric comprises determining a difference in a number of occurrences of a part of speech in the original text and in the translation correction; and determining an accuracy of the translation correction based on the at least one metric. 39. The system of claim 38 wherein the operations further comprise: updating a confidence score for the second user based on the accuracy of the translation correction, the confidence score representing a likelihood that the second user will provide an accurate translation of a text message at a later time.