Pretty horrible outcome for anyone who got in on their IPO ($21/share) just 4 years ago.
It's kind of a fitting end for mostly a sham company. The business model was shaky at best, mostly just milking first page rankings all over google.
The argument that coupon codes incent buying activity is valid, but literally all this company did was be the first on google. If the actual retailer ranked ahead of RTMN for coupon searches, RTMN wouldn't be anywhere near where it is today, and retailers sales would be exactly the same.