Infinity Ward and Treyarch have teamed up to raise funds for Ana Kessel, an artist working at Insomniac Game. Insomniac Games has been responsible for the Resistance series, Ratchet and Clank, and the upcoming Sunset Overdrive game.
Infinity Ward and Treyarch are giving signed Hardened Editions and posters of Call of Duty titles on eBay. All the proceeds will be given to Kessel, so that she can pay her medical bills. Kessel was involved in a hit and run accident. A driver hit her on the road, and drove off; her leg was amputated and she needs help paying her bills.
You can participate in the auction here.