No need to second-guess the price you paid for your hotel. There's a new website to take care of that for you.
What it does: Forward your hotel booking confirmation email (for hotels with free cancellation) to firstname.lastname@example.org. If DreamCheaper finds the same room — or better — at a cheaper price, it will book it for you and cancel your previous, more expensive booking.
What's hot: Savings keep getting bigger if you're booking more than one room for more than a day or two. It claims to have found savings for two out of three bookings and cut rates an average of 15% and sometimes by as much as 60%. Visit the "All about the financials" section in Frequently Asked Questions if you have want more information about the payment process.