I haven't used those yet, but I did take my man to Indulge Burger the other day, Groupon in hand ($15 for a $30 certificate), and was not disappointed. I didn't bring my camera, but trust me, it was amazing. You build your own burger (pick the brioche bun!), choose your meat, which can include salmon or a veggie burger (kobe = yum!), cheese (gruyere is my fav) and about a billion other things. Look at the menu online and you will see what I mean.
That was quite the tangent. (But a delicious one). My point is that you should check out sites like groupon.com and the newly launched livingsocial.com for clothing deals and delicious adventures! (If your city isn't listed, check to see if neighboring cities are included).
Where do you get your great deals? Or are some things worth the splurge?