Stop. Impulsive shopping has no place in the current economic downturn. With companies going bankrupt, banks growing stingy with loans and people becoming unsure of their financial stability, it is imperative that you fine-tune your shopping habits to the rough times. Your goal: Save up for the rainy days. Your move: Do your homework before you engage in any shopping spree or grocery hoarding. Here are five ways you can do your shopping homework: