Provided are methods and systems for, in one aspect, managing content delivered to one or more devices. Methods may comprise receiving a first identifier associated with a user of content. The content may comprise one or more advertisement or placement opportunities. A second identifier may be determined based at least on the first identifier. The second identifier may be a perishable identifier configured to expire based on an event. The second identifier may be transmitted to an entity associated with an advertisement inventory, wherein the second identifier facilitates the targeted placement of one or more advertisements from the advertisement inventory without exposing the first identifier to the entity.