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LifeinAsia - 10:25 pm on Jan 7, 2011 (gmt 0)
Basically, it's saying that Amazon's Illinois affiliates create a nexus for sale tax purposes. So Amazon (or any affiliate program with affiliates in Illinois) would have to start collecting sales tax for all orders shipped to Illinois.
If Amazon (and other affiliate programs) fire their affiliates in Illinois, they no longer have a nexus there and would not be required to collect sales tax.