Some good points here:
1) Businesses with less than $1 million a year in out-of-state sales would be exempt.
2) "This is a sales and use tax which is on the books," said Michael Kercheval, president and CEO of the International Council of Shopping Centers. "This isn't a tax issue. It's a tax collection issue."
3) "Kercheval's group is part of a broad coalition of retailers that supports Enzi's bill, including Internet giant Amazon, which says it wants a uniform national policy for collecting taxes on Internet sales."
(Yes, most of the people who will have to collect it, whose biz will be affected by it, support it - because of it's simplicity and burden relief to them.)
4) "Supporters say the bill makes it relatively easy for Internet retailers to comply. States must provide free computer software to help retailers calculate sales taxes, based on where shoppers live. States also must establish a single entity to receive Internet sales tax revenue, so retailers don't have to send them to individual counties or cities."
(Sell over $1M out-of-state, add the plugin to your cart - and your sales tax admin / compliance / dispute resolution / implementation work is eazy peazy lemon squeezy!)