Sorry young'uns, this free Sierra Nevada t-shirt is for Hiffers over the age of 21. You have to share a photo of yourself having an adventure, which apparently means doing something outdoors. That sure runs contrary to my definition of adventure. Trust me, you haven't lived until you turn on the TV, plop down on the couch, and discover that the remote control is … OUT OF BATTERIES! *DUN DUN DUN* There's no telling what you'll be stuck watching for the next five hours.
The site is a little flaky on the rules. If you look at the gallery of photos, everybody is holding a can of Sierra Nevada. The FAQs make it sound like you need to show their beer, however therules don't say you have to display one. I just uploaded a random photo of me outdoors and hoped for the best. But if you have any Sierra Nevada around, go take a photo on your porch holding the beer and you'll certainly get a shirt.
And finally, I was redirected to the main page after submitting my picture, but I did receive a confirmation email.