Many of you may have heard of Groupon by now, but if you haven't, it's amazing. Businesses in your area (or sometimes online businesses) will over products or services at a hefty discount if you buy during the Groupon sale. I've used Groupon for Barnes & Noble gift cards ($10 for $20), Gap ($25 for $50), American Apparel ($25 for $50), Zipline Rides down Fremont St ($10 for $25), Restaurants for
