[Bob]

I think a penny tip is entirely appropriate for poor service.

I'd suggest doing the business a favor. If the service is that poor, it needs to be brought to the manager's attention as well.

[Pollster1]

I'd suggest doing the business a favor. If the service is that poor, it needs to be brought to the manager's attention as well.

On the flip side, if the service is excellent, I'll ask for the manager and compliment my server. Everyone gets shallow complaints, and we owe it to the good people to put in a good word that balances out those comments.