if you read down it says this:
If any Gadget Lovers are interested, "Road Angel" http://www.blackspot.com.
It's a GPS unit with a difference, it has a onboard database (updateable online) of the location of Speed Camera's, and warns you when you are approaching one. It can also warn you of potentially hazardous areas. They even pay you £50 if you add a nnew camera to their database.