1. A method comprising: receiving, at a server and from plural communication devices of multiple users, tag subscription requests, each tag subscription request comprising a user-created tag, an identification of a media event to be monitored, and a notification threshold, wherein the tag subscription requests identify a common media event to be monitored and wherein the user-created tags in the subscriptions are different from one another; establishing, via a processor of the server, multiple tag subscriptions associated with the multiple user communication devices based on the tag subscription requests; receiving, via the processor, other user-created tags from plural user communication devices of members of an audience viewing the common media event; monitoring, via the processor, for other user-created tags relating to the common media event that match the user-created tag in a selected subscription; and based on the tag subscription, sending, via the server, a notification to a communication device of a notification recipient associated with the selected subscription when the processor determines that a number of the other user-created tags relating to the common media event that match the user-created tag in the selected subscription exceeds the notification threshold.