Saving Money with Groupon.com   Groupon.com is a free subscription service that offers a cornucopia of items at discounted prices.  There are deals on restaurants, household goods, toys, clothing, make-up, even vacations.  When you sign up you give the site your location and your email address.  Your location allows Groupon to show you ads targeted for your area.  These ads are most often for restaurants and services near where you live.  Your email address allows Groupon to alert you hot deals.  We are all trying to save money, so a site that can offer a way to do that can be a big benefit.  I want to caution…