Next click on the xbox button that looks like this
Sign into your Xbox live/Windows Live account (th site live.com is owned by microsoft, it is ok)
Once signed in you will receive 2 codes:
The top code is your 48hr gold code, the bottom code will only work in Japan so forget about it.
I have sold 4 of these codes on Listia (see here) 1x730 1x607 1x355 & 1x103
Given I am getting amazon cards for ~500 points these free codes netted me $3.50 in amazon credit and i still have another 6 to sell.
