I think that is sometimes the case.Groupon deals are generally the last croak of a dying firm, desperate for a small amount of cashflow.
From a firm's point of view, Groupon are a sad and desperate roll of the dice as they don't build any brand loyalty whatsoever and they devalue the product you're selling. Mind you, I'm not sure CPFC needs much help with devaluing, what with their gash, half-empty, run-down "stadium".