In your 10th edition, I think it would be worth exploring the ups & downs of using Groupon deals for wedding items - especially 'bigger' items like the limo, cake/desserts, photo booth, or even the honeymoon. I held off on trying this, mostly because it's a new concept to wedding planning and I didn't want to be the guinea pig that discovered the pitfalls of it. What I feared going wrong is that the vendor somehow became unavailable for my wedding date, and I'd then be stuck with a pricey groupon I wouldn't want or need for any other time.