kaled - 10:15 am on May 27, 2006 (gmt 0)

As I have said many times, there is only one way to determine which of two pages is genuine and which is a copy - that is to use the first-spidered date. This would not get it right 100% of the time (so manual intervention would be required) but it would probably have a success rate greater than 95%.

Unfortunately, Google does not seem to keep this information - I guess they're just too smart to do things the easy way.

Kaled.