1. A method comprising: receiving, by a computing device, a request from a user identifying a renderable media item; creating, by the computing device, a semantic icon from a tag in an annotation associated with a first time in the media item; and transmitting, by the computing device, a graphical user interface to the user for display, the graphical user interface showing the semantic icon on a timeline as a representation of the annotation, the semantic icon being displayed in a first size and, upon selection by the user, changes to a second size corresponding to a size of a segment of the media item.