Original sentence: An article was written describing how to use the Skyhook database with an iPhone and a laptop running Linux to identify the location of a MAC address.An article was written exposing the underlying protocol to query the Skyhook database for the physical location of any MAC address.There is also a video showing how to trick Skyhook's Location Service
Edited sentence: A 2008 article published at wordpress exposes the underlying protocol to query the Skyhook database for the physical location of any MAC address.An article published by Terry Stenvold at googlepages describing how to use the Skyhook database with an iPhone and a laptop running Linux to identify the location of a MAC address.The same exploit was published in April 2008 by a team led by Srdjan Capkun at the  Department of Computer Science, ETH Zurich.There is an associated youtube  video showing how to trick Skyhook's Location Service