Gonito (pronounced ɡɔ̃ˈɲitɔ) is a Kaggle-like platform for machine learning competitions (disclaimer: Gonito is neither affiliated with nor endorsed by Kaggle)
What's so special about Gonito:
Go to the challenge list and choose a challenge for you! $nothing
Click your account to setup your name, ID and SSH public key. $nothing
Gonito uses Persona authentication system available in Mozilla Firefox. Other authentication systems are on the way, but for the time being you need to use Firefox.
So, just click log in, then "Sign in with Persona" button and Firefox will guide you!