Gearbox Software via Facebook offers SHiFT Codes that unlock three Golden Keys for use on the PlayStation 3, Xbox 360, PC, or Mac versions of Borderlands 2 for free. That's tied with last week's mention as the best such deal we've seen. The codes, which expire on August 5:

• PlayStation 3: WTW3J-39F95-ZZKKJ-9TKT3-Z3HBT
• Xbox 360: CBK33-WWXCT-S69BX-CR33T-XR9CR
• Windows / Mac: KBC3J-95WXF-WBSBT-TTJJB-KTC6K