A server system, which manages distribution or download of content, may obtain data relating to interactions between a user and one or more other server systems providing services that are different from services provided by the server system. The server system may then analyze the obtained interactions related data, with the analysis comprising identifying content accessed, obtained, or used by the user during the interactions between the user and the one or more other server systems. The server system may then map that content to one or more other contents available in the server system, and may generate, based on that mapping, recommendation information personalized for the user.