Technology is described for trending media content in an online membership group. A frequency rate and velocity rate for media file interest may be determined for a media file added to one or more virtual collections in the online membership group during a predetermined period of time. Trending media files are identified according to the according to the frequency rate and the velocity rate determined for each media file added to the one or more virtual collections. Ranking information relating to the trending media files may be displayed on a graphical user interface (GUI) for the one or more virtual collections in the online membership group.