For years I've ran a guest WiFi network at home that has been called "Thingelstad Guest". It makes it super easy for people that are visiting to hop online when they are visiting. I also don't have to share the key for the "Thingelstad Home" network with people that are visiting which is a plus. Last night my buddy Ry4an Brase posted on Google+ this EFF Open Wireless project. I'm a proponent of allowing unfettered access to the Internet so I decided to join up and rename our guest network.
Does your router support a guest network? How about doing the same on your network?