14. A system for classifying media content, comprising: at least one network device that manages a communications over a network; and one or more other network devices each having a processor configured to perform actions, the actions including: receiving, from a client device, a request to compose a message; providing, to a client device, a user interface that is configured to enable a user of the client device to compose the message; receiving, through the user interface, a request to attach a file to the message; displaying, to the user, a personalized hierarchical structure of tags (“PHST”) that is automatically generated from one or more automatic tags that are associated with one or more message file attachments and automatically modified including at least one custom generated tag automatically generated using the one or more custom tags received from the user for the at least one of the one or more message file attachments, where the at least one of the one or more message file attachments is associated with the one or more custom tags, wherein the PHST separately indicates the one or more automatic tags and the at least one custom generated tag; receiving, from the user, a tag selection of at least one tag from the PHST; and attaching one or more files that are associated with the tag selection to the message.
14. A system for classifying media content, comprising: at least one network device that manages a communications over a network; and one or more other network devices each having a processor configured to perform actions, the actions including: receiving, from a client device, a request to compose a message; providing, to a client device, a user interface that is configured to enable a user of the client device to compose the message; receiving, through the user interface, a request to attach a file to the message; displaying, to the user, a personalized hierarchical structure of tags (“PHST”) that is automatically generated from one or more automatic tags that are associated with one or more message file attachments and automatically modified including at least one custom generated tag automatically generated using the one or more custom tags received from the user for the at least one of the one or more message file attachments, where the at least one of the one or more message file attachments is associated with the one or more custom tags, wherein the PHST separately indicates the one or more automatic tags and the at least one custom generated tag; receiving, from the user, a tag selection of at least one tag from the PHST; and attaching one or more files that are associated with the tag selection to the message. 18. The system of claim 14 , wherein the processor further enables actions, the actions comprising: displaying an advertisement to the user, wherein the advertisement is automatically selected based on information associated with at least one or more tags.