Amazon has their Amazon Prime Trial Offer Back! Get unlimited 2 day shipping for Christmas!
1. Sign into you account
2. Click on "Manage your prime"
3. It will say that its been canceled, if you used the offer before.
4. Click on the link saying if you want to sign up.
5. Confirm address and give credit card info
6. It will offer you one month of free "Prime"
7. Make sure the you cancel the upgrade before one month.
If it doesn't work:
1. Sign *out* of your Amazon account.
2. Go to the link above to start the sign-up process.
4. You'll have to sign in again in the process
3. Follow the instructions, give CC number and billing address, etc.
5. In the end there should be a very explicit button "start my free trial"