Duolingo Turned Me Into a Monster - CNET

How Duolingo Leaderboards and Leagues Work

We live to compete. What I learned by winning the Duolingo diamond league, by Karolina Kozmana

20 things I've learnt after using Duolingo for 200 days – Liz Learns Welsh

Diamond league this week has been harsh , 2.2k is in demotion zone and 15k isn't enough for podium finish : r/duolingo

If Duolingo Is For Language-Learning, Why Do Many Users Cheat?

Winning The DuoLingo Diamond League – – Ben Martens

Lukas' weblog

How Duolingo's new gamification mechanism convinced me to pay, by Shengyu Chen

Duolingo review — Kelleher Bros.

Just another example of how the competition in the leagues is becoming more and more ridiculous. The leader of the demotion zone has 1,831 XP, while first place has 17,460 XP. This