Instruct: Classify Amazon reviews into positive or negative sentiment
Query: save your money

The author goes off on ridiculous sidetracks about private , academic and government related investment possibilities - all the while completely ignoring the several dozen publicly traded companies that are working on the cutting edge of nanotechnology. Indeed , several public companies dedicated specifically to nanotech are mentioned only once - in a stock chart. No profile or business models are even hinted at. Just a ticker symbol and price. Of no use to the average investor whatsoever.