Content aggregation and presentation

A computing device comprising:

• one or more processors;
• and
• a memory coupled to the one or more processors, the memory storing computer readable instructions that, when executed by the one or more processors, causes the one or more processors to:
• store preferences of a user in the memory, the preferences of the user comprising genres of interest to the user, identities of friends identified in a contacts list of the user, consumption behavior of the friends, and past consumption history of the user;
• identify content items from a plurality of predetermined content sources;
• assign a ranking to the identified content items at least in part according to the genres of interest, the consumption behavior of the friends, and the past consumption history;
• determine that at least a portion of the identified content items have a ranking that satisfies a threshold rank;
• and
• format the at least the portion of the identified content items as a single content item instead of separate content items.

One or more computer-readable storage media storing instructions that, when executed by one or more processors, cause the one or more processors to perform acts comprising:

• aggregating a plurality of content items from a plurality of predetermined content sources;
• receiving preferences of a user;
• determining metadata for at least a portion of the plurality of content items, wherein metadata for a content item of the plurality of content items includes a decay rate indicating a rate at which a value for the content item diminishes over time;
• filtering the plurality of content items based at least in part on one or more of the preferences of the user and the metadata;
• ordering the filtered plurality of content items based at least in part on a relevance ranking or an ordering explicitly designated by the user;
• and
• delivering the ordered, filtered plurality of content items to the user.