Any amazon sellers on here? If so you may also be an amazon affiliate member. In my state of Illinois they recently cancelled the program b/c Pat Quinn passed a internet sales tax law today.
It's really stupid. Long story short before IL made no sales tax off amazon but did make income tax off affiliates. Now they will still no longer make any sales tax and since the affiliate program is cancelled they also won't make income tax off affiliate members.
On top of this the whole thing is unconstitutional as there was a supreme court case involving Quill Office Supplies where it was determined catalogues and essentially websites aren't considered brick and mortar locations and need not pay sales tax.
This is comming to 13 other states so if you are an amazon affiliate and don't want this to happen make your voice heard.
http://rulesforrebels.blogspot.com/2011/03/amazoncom-affiliate-program-cancelled.html