This freebie from 2013 is no longer available, however Rewards Survey sometimes offers free WSJ subscriptions! I keep a running, updated list of their offers on that link.
It's during prolonged freebie droughts that I rediscover my love for the classic free Wall Street Journal newspaper subscription offer from RewardsGold. Whenever it's noon and I haven't found a single freebie, I like to spread a WSJ on my desk and put on a fake pair of reading glasses. I figure that way, at the very least, my dogs will look at me with respect and think “now there's a guy who knows what he's doing!”
This offer is for a free 26-week subscription. If you currently have a free (or paid) subscription, it's still worth requesting this since it should still add 26 free weeks to your account.