It looks like there will be various Borderlands 2 giveaways every other week from SHiFT and so instead of creating a new thread every time, maybe we should just use one common thread and I will update the initial post with the most relevant codes for that period.
Just came out on #ECHOCasts (Twitter)
Released approx 10am AEDT 17 Nov 2012: [Currently active]
WinPC: CTWTB-JTBW5-KFTTT-JTB33-JTBWB
X360: WTWBB-ZJ9Z5-69XJ6-KRTBB-ZHBBH
PS3: KTKJB-3CX5B-3CWK3-ZBCJJ-JJZ9T
Released approx 1am AEDT 15 Nov 2012: [Unknown if still active]
WinPC: CT5J3-BF5HZ-633JB-T33TJ-XSKZF
PS3: WTK3B-WTZ9B-69BCJ-STKTT-BZCX5
X360: WTK3B-WTZ5F-36FBR-KXJTT-BZC6J
WinPC: WTCJ3-SHH3K-KFJT3-JBJ3J-H5965
X360: 5JWTJ-JCSSC-6S6TX-5RBTJ-9RZBJ
PS3: 5BWJB-W5F5J-JKKWT-9JWJT-KCZ99
27/12:
PC / Mac SHiFT Code: W3CTT-96CHC-WFBB3-B3BBT-XS66W
Xbox 360 SHiFT Code: WT53J-RJBXZ-6Z636-56J3B-RJ39R
PlayStation 3 SHiFT Code : WTWTJ-ZRHHW-JWWK3-9TKJB-ZKK53
2/1:
And some codes that will be active until January 6
PS3: CJ53B-66ZH5-JWK5T-9TKB3-JHC39
PC/Mac: K3CJT-FRWZK-KRBBT-BJJ33-CB6TH
X360: C3CT3-TTBF9-RH6JF-WF3T3-XR3T9
Mod: Subscribe to this deal for new codes