Join the Welcome Rewards program at Hotels.com and earn a free night for every 10 nights that you stay. Your credits accrue when you sign into your account and book a stay through Hotels.com. After your stay, you will be one step closer to your free night. Following your 10th night, you will receive a credit for a free night with your next booking. Sign up is fast and free. Just click here and look for the information on the right side. Even better, there are no date restrictions on this deal so if you travel often or are planning a big trip, check it out.