The invention includes a method and apparatus for searching, selecting, delivering, and presenting content to a user. In one embodiment, a method receiving content selection criteria, determining a set of candidate content items by selecting ones of a plurality of available content items using the content selection criteria, and propagating ones of the candidate content items of the set of candidate content items for presentation to the user. The entry of the content selection criteria is adapted for being controlled from a rich user interface. The presentation of the propagated ones of the candidate content items is adapted for being controlled from a simple user interface. The rich user interface and simple user interface may be part of one user device or separate user devices. The content selection criteria may include one or more rule sets, which may be defined and executed in many ways.