Bumper Sticker Giveaway
The 100 free stickers have been claimed. You can still get one by placing a book order, or by showing proof of a $2+ donation to SENS.org in this thread: https://www.reddit.com/r/longevity/comments/9t6ggg/donations_november_2018/
I've also created a simple card game based around this work using a standard deck of cards. You can find the rules here.