Systems, methods, and computer-readable media are disclosed for detecting user interactions and delivering content using interaction metrics. In one embodiment, an example method may include receiving a bid request for an available content delivery slot, the bid request comprising context information, determining first candidate content for the available content delivery slot, and determining a first base bid value for the first candidate content. Example methods may include determining a predicted conversion rate for an impression of the first candidate content served at the available content delivery slot, determining an estimated revenue for serving the impression at the available content delivery slot, determining a first bid modifier using the predicted conversion rate and the estimated revenue, and sending a response to the bid request comprising a first bid amount, wherein the first bid amount is based at least in part on the first base bid value and the first bid modifier.