I just noticed that DreamHost has posted another special promo code on their front page:
Other than the “year or longer plan” part, it doesn’t seem to have any other restrictions or time limit. I wonder if they plan on running this promotion forever?
Or just today? 
Free unique IP and $67 off with code [color=#CC0000]LMIP67[/color] or use [color=#CC0000]LM97[/color] for $97 off. Click for other DreamHost coupons / promo codes
It is a great discount.
From the past experiences, DH sometimes offer a promo code for a time limit.
But for this one, DH does not mention anything about time limit. Maybe it is forever
Save $97 (MAX Discount) with code: [color=#CC0000]97YES[/color] Sign Up NOW or More Codes Here
So, our $97 off promo code is less interesting then to new customers 
And too bad the promo code is for new customer only …
Looking for Promo Code ? $97 off for yearly plan with [color=#00CC00] GREENCODE SIGN UP NOW[/color]