There's a less known feature in Airport base stations that doesn't really serve any useful purpose other than parading your quip remarks to people who log onto your WiFi network. Nevertheless, its a cool personal touch to make your WiFi network unique. You can either place a warm welcome greeting or scare off hackers who manage to log into your WiFi network with threats of prosecution.

Diagram 1.0, WiFi welcome message

The welcome message pops up the moment a person joins your WiFi network and can be set up in a few easy steps.

Diagram 1.1, Setting up welcome message in the Network pane of your Airport Admin Utility

1. Launch your Airport Admin Utility, located in your Utilities Folder;
2. Select the main Airport base station within your WiFi network (usually the one that is the nucleus of your bridged network if you have one) and click Configure;
3. Key in the admin password (if there is one) to access the base station;
4. Select the Network pane (Diagram 1.1);
5. Key in your message in the Message textbox;
6. Update your base station.

Once the base station has reset itself, anyone logging into your WiFi network will see the welcome message the moment they successfully establish a link with your network.