Abstract: Consumption of online content is tracked to increase a likelihood that the user is paying attention. A request is received from a remote processing device to begin receiving content, and a block of content is assembled, the block of content having a known content playback duration. Additionally, a post block verification duration is associated with the block of content. The assembled block of content is communicated to the remote processing device for playback thereon, and a perception indicator is collected during playback of the block of content. The collected perception indicator is compared against a perception threshold. Also, a post block verification is performed immediately after playback of the block of content for the post block verification duration. A contingency result is then determined based upon the comparison of the perception indicator to the perception threshold, and whether a valid feedback is received within the post block verification duration.