Black Friday is always big, but this year promises to be bigger and messier than ever because of the economic crisis. October saw a record decline in sales for retailers. Several big companies barely survived, while others went under altogether. Couple that with the fact that more consumers are both conscious of their own budgets and aware that it's a buyer's market, and you have yourself a retail storm brewin'—my trick knee of values is telling me this just might be a perfect storm. In a situation like this, the number one tip is to be prepared. If you haven't done your homework already, just be thankful you have someone like Prof. Dealzmodo here who's willing to do it for you.