Image courtesy of Stuart Miles / freedigitalphotos.net

$49 for dental exam with x-rays and cleaning.  54% off teeth whitening.  52% off Invisalign treatment. These are just some of the many dental deals I found on a recent visit to the Groupon website.  Although many dentists currently use voucher advertising, such as that provided by Groupon, Living Social and similar sites, this type of advertising may be illegal, unethical, or both, in some states. Continue reading →