Free 1 month Xbox Live Gold for Silver members only. May require mobile device/mobile web browser, Android, iOS, etc.
I know there are already posts in the past on this deal and people saying it's expired and other's saying that it works. I was 1 of those it wasn't working for. But I tried using my mom's Cricket cell phone that's running Android and it worked just fine. Just don't forget to turn off auto renewal. Saw other people suggesting at FatWallet to use a Mobile Device and it worked. My subscription now expires on 2/1/2014.
For those without a mobile device. Someone did mention they used Opera Mobile Emulator and it worked for them. I was going to try that but ended up just using my mom's phone.