Hotels.com offering a mail-in rebate valid for up to $100 back on select hotel stays for a limited time. To get discount, use the coupon code: REBATES12 at checkout. Deal is valid only on trips booked by December 31, 2012 for stay through January 31, 2013. This offer is not valid on vacation/hotel packages.

Cashback:

• $20 back on 3-night stays
• $30 back on 5-night stays
• $50 back on 8-night stays
• $75 back on 10-night stays
• $100 back on 12-night stays