Here's an interesting website put together by a Spanish guy and a few friends of him. The man developed a software that collects the AIS information from boats and planes and displays it in a Google Map real-time.
Here's the link
. When your mouse pointer is in the top left corner a little menu will pop up, in which you can choose from a down list "Barcos". Then you can see the boats whose AIS signal is being captured at that particular moment. You can actually see them moving if you zoom in on one of them (.... or also if you wait a looooong time
). You can also click on one and you will see her AIS info (name of the boat, route, speed, destination, etc.) displayed.
You can filter groups of boats (those taking place on a specific sailing race, for instance). And if you have a mobile phone with gps, you can install the guy's own developed application to sms your data and info to the system every 30 minutes, so your family can spot where you are at every moment.
The problem I envision is that it is not only your family, but everyone in the world who can actually track you. So personally, I think it will eventually be shut down for security reasons and privacy regulations. You can also select "Aviones" and see the planes location, intended route, projection of where they will be in 1 to 59 minutes from now, etc. His plane-info-receiving network of connected receivers is much more limited, though. And, honestly, I also find it pretty scary (in an orwellian way) that anyone in the world can see where you are and track your moves the minute you turn your AIS transmitter on.
But while it still lasts I though some of you may enjoy having a look at the website.