Site has pop-ups that are annoying. Also seems to be very spammy. Their ads show up at my website without warning. Unsatisfactory for Trustworthiness and Vender Reliability. Poor for Privacy, Site spams other sites with their pop-ups.
This site says that if you refer a friend you get $10 Groupon bucks. I have given many friends referral links and I never receive any Groupon bucks for referring them. Their referral system is designed to screw you over. I am never using Groupon again. Their advertising campaigns are also extremely disturbing.