"Good idea but before it's time" crashed so many mobile startups pre-iPhone.
Not so much "lets all talk about this in realtime!" I admit, but there seems to be a subset of people who use Twitter/Reddit like that when watching politics or sports.
The best thing to come out of the project was the "advertising" video featuring YT casually answering every question correctly. Which is a thing you can do when you've watched the same episode 15 times to record second-level timing!
It always confused me why Jeopardy never pushed anything official.