The foregoing are among the objects attained by the invention, which provides, in some aspects, digital data processing methods for generation of customized user interfaces that present links, images or other components representing items of interest to a user in an order that is prioritized as a function of (a) representations in a multidimensional factor space of characteristics of the respective items, and (b) representations in that same multidimensional space of characteristics of “context-indicative items”—e.g., items in which the user has previously shown an interest, as indicated by clicks or other interactions with those items respective components in the user interface.