In one embodiment, a method comprises identifying user selection preferences of an identified user having accessed the network, the identifying based on an accumulation of user selection inputs executed by the identified user, relative to input options presented to the user and identifying respective available network items, the accumulation including an identification of the input options not having been selected by the identified user; determining a group of network users having a highest correlation of shared interests with the identified user, based on identifying preferred network items for the identified user, and identifying first network users providing highest relative user affinity values for each of the preferred network items; and determining at least one of new network items most likely to be preferred by the identified user, based on determining, from among network items not presented to the identifier user, the preferred network items for each of the first network users in the group.