The patent seems to be based on defining class solely on the dollar value of last years income, whereas the actual measures of class membership take other forms

The patent seems to be based on defining class solely on the dollar value of last years income, whereas the actual measures of class membership take other forms. There's nothing wrong or useless about advertising based on W-2 income level; but that won't have greater sociological effects on economic class or whatever. Of course via the magic of widely shared credit reports, everyone already knows actual class breakdowns based on class differences in personal balance sheets and other measures.