http://www.nycgo.com/thirdnight?

Forget it, I tried several dates at 5 of these properties and the best I got from the promo code was $20 off per night at the Plaza where rooms start at $800.

Parrothead, it says you have to phone the hotels that the deal isn't available online. Did you try phoning?

Just about every time I see those deals (regardless of whom it's from), it clearly states that the first two nights are at a "full" price. Nearly everyone offers some kind of special rate of up to 1/3 (or more) off anyway if you search thoroughly making the 'third night free if you pay full price' deal rather meaningless, in my book.

There are some links from the website in the OP. When I went to the website and used the link the promo code filled in the website resv. system. It may not be a scam but it really isn't offering anything much on discounts.

I agree with NeoPatrick, this deal is meaningless.