If you're a regular Dota 2 player you'll be aware that from 11:00 AM tomorrow the Dota 2 Game Coordinator will be going down for maintenance for approximately an hour. To oversimplify things, it basically means you won't be able to find new matches until everything comes back up (although you'll be able to finish existing games).

But a cool part of the upcoming downtime is what they're doing to fix a small problem.