Well, at time of writing we have received more than seven thousand postcodes from PM listeners in the UK and around the world letting us know where they are when they're listening to us. In tonight's programme, Chris from iPM - we call him Mr Blog - will join me to talk about how we're going to use the information.
If you haven't yet sent us yours, there's still plenty time. Saturday is only the start of our project to put listeners on our map...we will add more postcodes as they come in.
Here are the details about how to send us yours.