1. A method for recommending mobile device activities, the method comprising: receiving an indication of a content item accessed by a mobile device; determining semantic information about the indicated content item, including at least one of: one or more entities referenced by the indicated content item, one or more entities related to the referenced one or more entities, or one or more categories of the referenced one or more entities and/or the related one or more entities; determining a mobile device activity, the activity having one or more associated entities and/or categories in common with the determined semantic information; and transmitting information about the determined activity.