1. A method of ranking curations, the method comprising: receiving a query; calculating, based on the query, a content similarity measurement for each of a plurality of curations, wherein each of the plurality of curations includes a plurality of digital files organized by a curator; extracting, from each of the plurality of curations, a plurality of curation-specific features; calculating a curation credit measurement for each of the plurality of curations based on the extracted plurality of curation-specific features according to Curation_Credit_i=α 1 *Curation_Popularity_i+β 1 *Curation_Curator_Credit_i, where Curation_Credit_i is the curation credit measurement of a curation i, α 1 and β 1 are constants, Curation_Popularity_i is a curation popularity credit measurement of the curation i, and Curation_Curator_Credit_i is a curation curator credit measurement of the curation i; and ranking each of the plurality of curations based on the corresponding content similarity measurement and the corresponding curation credit measurement.