rohitj - 6:16 pm on May 8, 2006 (gmt 0)

percentages -- You can't tag this onto income taxes because not every person within society uses VOIP or the internet. You have to target the tax to the goods as closely as possible otherwise you'd be creating even more inefficiencies/making more of society worse off than necessary. this is why there are special taxes alloted to all sorts of goods--from cable TV to airline tickets. They only want to charge the people who are gaining from its usage--not all of society.