Wired has a nice summary of the imagery analysis so far. If anything this process shows how difficult it is to find a small object such as a light aircraft in satellite imagery.
The search effort would probably benefit from using video captured from small planes. This effort has demonstrated the ability to examine a huge amount of data
Read the whole article here but I clipped some highlights below:
http://www.wired.com/software/webservices/news/2007/09/distributed_search
*Up to 50,000 people are hunting for missing aviator Steve Fossett, in a distributed search using satellite images and Amazon's Mechanical Turk.
*A 17,000-square-mile region search area.
The "distributed search" uses satellite images from DigitalGlobe, the company that provides images for Google Earth.
*each image is a 278-foot-square pieces of the search area.
*One of the heartiest of participants is 25-year-old software designer Andy Chantrill of Castle Donington, England, who worked on it for 13 straight hours on Monday and says he's put in 30 total hours examining about 5,000 squares.
*Amazon was happy to release the number of satellite images that have been scrutinized: more than 2 million, according to the company.
*There are more than 300,000 squares in the map. Each square is viewed 10 times, and the entire map has been re-entered at least three times as newer satellite pictures of the area have become available.
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