2. Device for enriching a first multimedia content created by a first creator, among a plurality of multimedia content creators within an online community, wherein the device comprises a microprocessor comprising: a clustering circuit configured to form clusters from said plurality of multimedia content creators, each cluster comprising at least two relevant creators from said plurality of multimedia content creators; an assigning circuit configured to assign, to a first cluster including the first creator, a score of relevance to each relevant creator within the first cluster, said score of relevance being determined from at least one criterion of similarity between each respective relevant creator and said first creator; a ranking circuit configured to rank said relevant creators of the first cluster according to scores of relevance assigned to each relevant creator of said first cluster; a selecting circuit configured to select, among a plurality of multimedia contents from the ranked relevant creators, at least one second multimedia content related to the first multimedia content for enriching the first multimedia content and retrieving said at least one second multimedia content selected from the ranked relevant creators of the first cluster; an enriching circuit configured to enrich the first multimedia content based on said at least one second multimedia content.
2. Device for enriching a first multimedia content created by a first creator, among a plurality of multimedia content creators within an online community, wherein the device comprises a microprocessor comprising: a clustering circuit configured to form clusters from said plurality of multimedia content creators, each cluster comprising at least two relevant creators from said plurality of multimedia content creators; an assigning circuit configured to assign, to a first cluster including the first creator, a score of relevance to each relevant creator within the first cluster, said score of relevance being determined from at least one criterion of similarity between each respective relevant creator and said first creator; a ranking circuit configured to rank said relevant creators of the first cluster according to scores of relevance assigned to each relevant creator of said first cluster; a selecting circuit configured to select, among a plurality of multimedia contents from the ranked relevant creators, at least one second multimedia content related to the first multimedia content for enriching the first multimedia content and retrieving said at least one second multimedia content selected from the ranked relevant creators of the first cluster; an enriching circuit configured to enrich the first multimedia content based on said at least one second multimedia content. 11. The device according to claim 2 , wherein said clustering circuit forms clusters by implementing a K-means algorithm based on a set of identified features.