is the ultimate wide-angle photograph. It shows everything that observer can see at a given location without moving around. It provides the feeling of actually being at the place where the panorama was taken. The viewer can zoom, pan 360 degrees horizontally and tilt up and down 90 degrees, covering the full sphere. Two or more panoramas linked together are called
Virtual Tour.
A survey
by the Pew Internet & American Life Project finds that 45% of online American adults have taken advantage of this internet application and taken virtual tours of another location online... On a typical day more than two million people are using the internet to take a virtual tour. see the full report