11. A method, comprising: providing access to a database of mapping information that links search-related information to a plurality of users of one or more social networks; continually monitoring a plurality of different search processes of the plurality of users for actions indicating shared interest in a first topic and shared interest in a second topic, wherein the first topic and the second topic are different; continually updating, by one or more processors, the mapping information based at least on the actions indicating the shared interest in the first topic and the shared interest in the second topic; creating a first social subnetwork by identifying, based at least in part on the mapping information, a first group of users of the plurality of users that have a common interest in the first topic; creating a second social subnetwork by identifying, based at least in part on the mapping information, a second group of users of the plurality of users that have a common interest in the second topic; monitoring interactions within the first social subnetwork and within the second social subnetwork to determine that a subgroup of users of the first group of users and of the second group of users share a common interest in a third topic; determining that a number of users in the sub-group of users meets or exceeds a threshold level of interest; and creating a third social subnetwork for the sub-group of users based at least in part on the determination that the number of users in the sub-group of users have met or exceeded the threshold level of interest, wherein the third social subnetwork facilitates interactions associated with the third topic for the sub-group of users.
11. A method, comprising: providing access to a database of mapping information that links search-related information to a plurality of users of one or more social networks; continually monitoring a plurality of different search processes of the plurality of users for actions indicating shared interest in a first topic and shared interest in a second topic, wherein the first topic and the second topic are different; continually updating, by one or more processors, the mapping information based at least on the actions indicating the shared interest in the first topic and the shared interest in the second topic; creating a first social subnetwork by identifying, based at least in part on the mapping information, a first group of users of the plurality of users that have a common interest in the first topic; creating a second social subnetwork by identifying, based at least in part on the mapping information, a second group of users of the plurality of users that have a common interest in the second topic; monitoring interactions within the first social subnetwork and within the second social subnetwork to determine that a subgroup of users of the first group of users and of the second group of users share a common interest in a third topic; determining that a number of users in the sub-group of users meets or exceeds a threshold level of interest; and creating a third social subnetwork for the sub-group of users based at least in part on the determination that the number of users in the sub-group of users have met or exceeded the threshold level of interest, wherein the third social subnetwork facilitates interactions associated with the third topic for the sub-group of users. 19. The method of claim 11 , wherein the threshold level of interest comprises a threshold number of users.