Abstract: A server system sends links to content categories for display on a user device associated with a user. Each content category corresponds to a subset of content items. When a link to one of the content categories is selected, the corresponding subset of the content items is sent for display on the user device. The system selects a group of content items according to determined relevance scores for the user based on one or more relevance criteria and sends links to the content items in the group for display on the user device in a first order according to the relevance scores. The system adjusts the relevance scores of some content items in the group according to user feedback and resends links to the content items in the group for display on the user device in a second order according to the adjusted relevance scores.

Abstract: A server system sends links to content categories for display on a user device associated with a user. Each content category corresponds to a subset of content items. When a link to one of the content categories is selected, the corresponding subset of the content items is sent for display on the user device. The system selects a group of content items according to determined relevance scores for the user based on one or more relevance criteria and sends links to the content items in the group for display on the user device in a first order according to the relevance scores. The system adjusts the relevance scores of some content items in the group according to user feedback and resends links to the content items in the group for display on the user device in a second order according to the adjusted relevance scores.

Abstract: A server system receives a first request for access to content items from a user device associated with a user. In response to the first request, links to a plurality of content categories are sent for display on the user device. The content categories include a plurality of content items. Furthermore, a first group of content items determined to be relevant to the user is identified in accordance with one or more relevance criteria. The first group of content items includes a first subset of the plurality of content items. In response to the first request, links to the first group of content items are sent for display on the user device in addition to the plurality of content categories.

Abstract: A server system receives a first request for access to content items from a user device associated with a user. In response to the first request, links to a plurality of content categories are sent for display on the user device. The content categories include a plurality of content items. Furthermore, a first group of content items determined to be relevant to the user is identified in accordance with one or more relevance criteria. The first group of content items includes a first subset of the plurality of content items.