1. A computer-implemented method comprising: receiving a plurality of a user's interactions with a plurality of items in a social networking system, wherein each of the plurality of items is associated with a category from a plurality of categories; ranking the items based on the user's interaction with the items; determining a highest ranked item for each category in the plurality of categories; ranking the categories based on the highest ranked item for each category in the plurality of categories; generating a bookmark link for each of a set of the items, wherein a bookmark link provides a link to the corresponding item in the social networking system; generating a set of bookmark links grouped by category, wherein the categories are ordered in accordance with the relative ranking of the categories, and wherein the bookmark links in each category are ordered in accordance with the relative ranking of the items corresponding to the bookmark links; and sending the set of bookmark links to the user for display.