Methods and systems are described for managing dynamic associations between folksonomic data and resources. One method includes receiving from a subscriber a subscription request to establish at least one of a first subscription to tag/resource association data associated with a resource and a second subscription to tag/resource association data associated with a folksonomic tag, wherein the folksonomic tag is unstructured metadata that includes a user-defined character string and establishing at least one of the first subscription and the second subscription. The method further includes determining a change to the tag/resource association data associated with at least one of the folksonomic tag and the resource identified in the subscription request, generating a notification message including at least one of an identifier of the folksonomic tag and an identifier of the resource in response to determining the change to the tag/resource association data associated with at least one of the folksonomic tag and the resource, and sending the notification message to the subscriber pursuant to at least one of the first subscription and the second subscription.