1. A method, comprising: receiving via a network connection, by a value analyzer implemented on one or more computers of a distributed computing environment, a plurality of submissions from a plurality of entities, wherein the plurality of submissions each comprise a textual description of an attribute of a product; matching, by the value analyzer, a set of the plurality of submissions such that the set of matching submissions include textual descriptions of a same product; performing, by the value analyzer, a similarity comparison for each submission of the set of matching submissions, wherein performing the similarity comparison comprises: comparing a particular submission of the set of matching submissions to a plurality of other submissions of the set of matching submissions; and determining a plurality of data quality scores for the particular submission, wherein each data quality score of the plurality of data quality scores is based on a measure of similarity between the textual description of the attribute of the product included in the particular submission and a textual description of the attribute of the product included in a respective one of the other submissions of the set of matching submissions; determining, by the value analyzer, based on the plurality of data quality scores, an overall data quality score for the quality of the textual description of the attribute of the product included in the particular submission, wherein the particular submission is from a particular entity of the plurality of entities; rating, by a quality analyzer implemented on one or more computers of the distributed computing environment, the particular entity who submitted the particular submission, based, at least in part, on the overall data quality score of the textual description submitted from the particular entity, wherein said rating comprises: combining the overall data quality score for the textual description in the particular submission with one or more previously determined data quality scores of textual descriptions in submissions previously received from the same particular entity to determine a cumulative data quality score of textual descriptions in submissions received from the same particular entity, wherein the particular entity is distinct from the other entities of the plurality of entities; and assigning a rating to the particular entity, wherein the rating indicates the particular entity's propensity to provide quality product descriptions; selecting, by the value analyzer implemented on the one or more computers of the distributed computing environment, a textual description of the attribute of the product, to be provided for display from the plurality of textual descriptions of the attribute of the product included in the plurality of submissions based, at least in part, on the rating of the particular entity that submitted the particular submission; storing the selected textual description of the attribute of the product in a database of the distributed computing environment; and in response to a query from a client, transmitting by the server of the distributed computing environment via a network-based interface to the client, the selected textual description of the attribute of the product for display.
5. The method of claim 1 , wherein the one or more previously determined data quality scores of textual descriptions are selected based on a number of most recent submissions received from the particular entity.