"What does it mean to go off the record?

We know that sometimes, we don't want a particular chat, or chats with a specific person, to be saved. Most existing IM services give no indication of whether the person you're chatting with is saving your conversation. But when chatting in Google Talk or Gmail, you can go "off the record," so that nothing typed from that point forward gets automatically saved in anyone's Gmail account.

Going off the record applies to individual people, and is persistent across chats. That means once you go off the record with a particular person, you will always be off the record with him or her, even if you close the chat window, and the two of you don't chat again until several months later. You will not need to go off the record each time you chat with the same person, but you will need to make this decision for each person you chat with. We've designed this to be a socially-negotiated setting because we want to give users full disclosure and control over whether the person they're talking to can save their chat."