Aka rationalist Tinder

Overview

Reciprocity.io is a website for finding dates and friendships based on the concept of “double opt-in”. The flow:

1. Sign in with Facebook
2. Check a box for each person you’d like to date (or hang out with, or “lick feet”)
3. If they also checked the box for you, the app lets you both know

Criticisms

by @Austin Chen

So first off, Reciprocity is a great side project, and gestures at what really valuable community infrastructure could look like. It’s main problem is that the site is pretty inactive. It promises