Brian, well done on your report. And ditto to you too, Zoe.
The sales associates were rude and condescending, and ditto for the manager.
To express that he felt the same way, my friend exclaimed, "Ditto!", when I was done speaking.
Hannah encouraged me to speak my mind instead of saying "ditto" at every break in the conversation.
The lecturer was very repetitive, so I used a lot of ditto marks while taking notes.