Priceline.com Chop-A-Thon Hotel Sale

If you've been waiting to book the hotel for this year's vacation, now might be the time.

To celebrate 10 years of dealmaking at Priceline, the Negotiator has given his best bargain beatdown to booking fees on published prices on over 23,000 hotels worldwide. When you book a hotel during their 10th Anniversary Chop-A-Thon Hotel Sale, you'll find lower prices on the hotel of your choice. The Chop-A-Thon Hotel Sale ends May 18th.

If it's the whole "put in a price" thing that makes you shy away from Priceline, they've got a nice feature where you can See Winning Bids For Hotels in Top Cities.
Use that to get an idea of the kinds of deals people are getting before you dive in and go for it.