We’ve all heard of taxes on items such as gasoline and tobacco, but how about on shopping bags?  Well believe it or not, this idea is being given serious consideration in San Francisco, where the city council will soon decide on whether or not to impose a 17 cent tax on each plastic grocery bag.  Tax advocates say that plastic bags not only create a litter problem, but are rarely recycled and use petroleum in their creation.  But opponents say the tax is regressive to poor families who can least afford it, and further claim that the oil saved from their elimination would only be like taking 90 SUV’s off the road out of a fleet of some one million in San Francisco.  With a decision still pending, this is one tax that’s not yet out of the bag!