An eye pleasing design focusing on the deal. Ideally a style sheet with a header displaying our logo (provided) a link to login (my account) the identity of the user if already logged in (see livingsocial.com).
Side navigation with four buttons (clear correlation between button selected and content displayed), one for "current offers", one for "how it works", one for "other cities", one for "past deals". A mountain similar to (or exactly like) the logo mountain to be displayed in the space under the 4 side navigation buttons, possibly with some semi-transparency.
A footer that contains links for "terms", "privacy", "sales opportunities", "franchise opportunities", "cities", "contact", and "share".
Lay out for the deal being offered (see livingsocial.com and make up your own deal in this space for an example).
Pastel colors that compliment logo design, clean, easy to navigate, corporate look.