1. A computing device comprising: a network interface; at least one processor; a data storage; and a program logic stored in the data storage and executable by the at least one processor to: receive input data indicating a selection of a particular audio track; in response to the received input data, send, via the network interface, a command to play back the particular audio track on a given playback device of a media playback system that is registered to a first account of a social media service, wherein accounts of the social media service are connectable with one another within a social network of the social media service; query, via the network interface, the social media service for one or more second accounts of the social media service that (i) are registered to respective media playback systems that have played the particular audio track on at least a threshold number of occasions and (ii) have not yet been connected to the first account of the social media service within the social network; based on the querying of the social media service, receive, via the network interface, the queried one or more second accounts of the social media service that (i) are registered to respective media playback systems that have played the particular audio track on at least a threshold number of occasions and (ii) have not yet been connected to the first account of the social media service within the social network; while the particular audio track is playing back on the given playback device, cause a graphical interface to display one or more respective indications of the received one or more second accounts of the social media service associated with the particular audio track that is currently playing; detect a selection of a particular indication that represents a particular second account of the received one or more second accounts of the social media service; and based on the detected selection, send, via the network interface, a request to the social media service to connect the first account of the social media service to the particular second account of the received one or more second accounts of the social media service indicated by the selected indication within the social network.