Replacement of content items
US20140279135A1 Patents
Example systems may include: receiving an auction announcement message for a content inventory unit from an auction platform, where the auction announcement message includes an identifier that is associated with a user device; determining a bid for the content inventory unit based on data in a record associated with the identifier; transmitting the bid to the auction platform in response to the auction announce ment message; transmitting a content item associated with the identifier in response to the auction announcement message; receiving a message indicating that the content item is pre sen
17 claims. 71,770 characters of text.