How does wowcher deals work has anyone used Wowcher or Groupon?

How does wowcher deals work

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The businesses benefit because they get advertised to a new, wider range of potential customers, while the customers benefit because of the discounts. Howard Marks, an Oxford University graduate turned drug smuggler, made millions.

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Use groupon a fair amount, mostly for services and eating out. Delivery always made as stated, items are a high standard. Wowcher are amazing Not only are they're prices heavily discounted but their customer service is fantastic.

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Does anyone know what trading standards view is on the likes of wowcher?