When you chat in Gmail your conversation will be saved in your chat history and the chat history of the person you are contacting. So what will you do if you want to chat on an extremely secret issue so that you don't want the conversations to be saved in your or in the chat history of the person you are contacting? There is one feature called " Off the record"  in Gmail to do this.Many of you might not have noticed this cool feature. So lets see how to do it :-)

• Click on More on the top right of the chat box
• Click on Go Off the record