Most countries have some form of online tax for sales. It's only logical a small tax be applied online in the USA as well. It'd greatly help with budget problems and it's not like people are gonna stop shopping online either. Unless they want to drive to a store, pay $5 a gallon, hope they have the product your looking for, wait in line and STILL pay tax on the same item...
Most countries are less powerful, prosperous, and free as we are. Why should we want to be like most countries?