curious as to why you "never do these things". yet I'd bet if someone offered you a free $5 GC to living social you'd probably take it.
I'm not a lawyer but the company appears to have violated some consumer rights law and you've done business with them so you may be entitled to some compensation.
just wondering what the distinction would be.
In a related story. i once received $7.99 for buying a milli vanilli CD- yes. judge me... but i was young.