I was always a fan of Groupon for over 5 years because its deals are quite interesting and I was wondering why many people complained about it until problems started to happen to me last year. It is a tricky bait. My $55.50 Groupon Bucks and an $50 unused Restaurant Voucher were gone. Three Groupon supervisors I spoke to on the phone agreed that I should be refunded properly should the company decides to deactivate my accounts without informing me. However, upon their escalations to the tech team per their promises, the same response emails I received were the same, short and no explanation of the missing Bucks: "Upon reviewing your account, we encountered a violation of our Terms of Service and closed the account. This decision cannot be appealed."
Here is a sample scenario: if you have more than 1 account (to understand this, if you had 1 in the past several years and another one now, OR you have only 1 and your wife has 1, these are considered "more than 1 account"), Groupon will someday (soon or later, until it happens to you) close all your accounts and therefore all of your Groupon Bucks (which is Groupon Giftcard that you purchased from your pocket, so it is your money) plus any unused Groupon Vouchers will be gone. It means the company will take all of your money without informing you until you discover it by yourself. Search google for it and you will know. I came to realize that the company does not seem to keep customers' last Groupon Bucks balance when they deactivate consumers' accounts and therefore the only way to say is to forget the topic of the missing Groupon Bucks and instead only say there is a violation.
You are already warned!