I got it, read the fine print if you accept them on their offer.
From a
slashdot post yesterday.
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Always read the fine print. JeremyWall writes "The recent Netflix class action settlement has a catch. While it is nice that the average subscriber will be upgraded for one month for free, if you read the fine print in section 4.2 of the long form [PDF Warning] of the settlement you find that you will be automatically charged for the higher subscription going forward. If you don't opt back out when you get their email, you are gonna get charged from then on. If you opt in for the settlement - check your email box regularly!"
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