I think you're just not using sites where this is a problem. Any site that currently pre-moderates comments is a potential customer to a service such as this. F

I think you're just not using sites where this is a problem. Any site that currently pre-moderates comments is a potential customer to a service such as this. For instance, websites of dead tree media must defend their brand vigorously, as it's all they've got left. So the quality of their comments matters a lot.