Generating card stacks with queries on online social networks

GENERATING CARD STACKS WITH QUERIES ON ONLINE SOCIAL NETWORKS In one embodiment, a method includes receiving, from a client device of a user of an online social network, an input from the user to access a card-stack interface, generating a plurality of cards, where each card comprises a suggested query referencing a query-domain associated with the online social network and one or more query-filters, and where each query filter references one or more objects of the online social network, each card further comprising one or more search results corresponding to the suggested query, and each search result referencing an object of the online social network matching the suggested query of the card; and sending, to the client device in response to the input from the first user, the card-stack interface for display to the first user, wherein the card-stack interface comprises one or more of the generated cards. Accessing, a social graph comprising a plurality of nodes and a plurality of 710 edges connecting the nodes, each of the edges between two of the nodes representing a single degree of separation between them Generating a plurality of cards, each card comprising a suggested query 720 referencing a query-domain associated with the online social network and zero or more query-filters Calculating a user-engagement score for each card based on one or more user-engagement factors Sending each card having a user-enoagement score greater than a -user 740 engagement threshold score to the first user for display on a page currently accessed by the first user