"[I]f you want to go out, invite friends to join your group, then swipe and match with other groups nearby who are also going out. Message your matches, see where they’re going, make a plan or just find out where people are headed, meet up and have fun."
Sounds pretty straightforward, right? Well, interestingly, Tinder explains the group you create for the night expires at noon the next day and the new friends you matched with disappear, so if you end up actually liking any of these people enough to continue being friends IRL, you'll likely have to exchange texts or connect on social media. Hopefully, things don't get too awkward.
Of course, Tinder Social isn't the first service aimed at helping people find new friends, but considering Tinder's massive existing user base, it's safe to assume it'll be pretty popular. There's already a potentially huge use for it: organizing a Pokémon Go outing. Swipe away, people. Swipe away.