topr8 - 10:44 pm on Mar 19, 2013 (gmt 0)
you are not clear what you mean?
>>Basically he had about 5 domains which all contained the same products and only the domain names really changed.
do you mean basically duplicate content but with different domain names?
if so then waste of time.
however another scenario where different domains sell the same products (from the same db) but where there is lots of value added content eg text information, that is different on the different sites ... then that is good and worth keepign them seperate.