Actually, sales tax as a form of taxation is considered regressive (not progressive). While the "rich" consume more and pay more sales tax in total, they would pay the same amount of sales tax on the purchase of a new car as anyone else. As a percentage of income, sales tax works out to be...
Typically use the favourite tags to keep track of information gems. How do you see them though? In Twitter, one goes to their profile, but I don't see that option here?! Thxs!