Facebook leaderboard for AT&T back when they were dropping calls like crazy. So really early in social media days.

The more you commented or liked posts the higher on leader board. Top comments would be automatically highlight.

I kept trying to get word to people in charge that the project would fail. No one would listen.

Went live for 1 day. Every top comment, was on how horrible AT&T was.

Shut down next day. 3 months of work for nothing.