This is a hard nut to crack and i'm glad to see Google putting some weight behind it. I'm especially keen that it is an open api so we in the WordPress world can leverage it.

There is another player in this space that already has a WordPress plugin available: Sift Ninja. They just came out of beta and while new to the WordPress scene, they come to it after years of experience and data collection doing work for Twitch, X-box, etc. I've toyed with it enough to get behind it as the best solution there is for now.