Trim it down to size with a high priority deviceIn the days offline long before the World Wide Web and PPC (Pay per click) ads-come, publishers and radio and TV stations experimented with something called PPO (pay per order) and PPR (pay per response) or PPL (pay per lead) advertising. As their names suggest, these ads have been where the advertisers either paid per lead generated or order generated. But the truth is that these ads never really took off and was never accepted.
