It maybe useless to you or me, but its very much active and used by a lot of people. I think this is one of the few Yahoo Services that organically grew over time and started having a name for itself.

I do think there is plenty of room to make it much much better. It looks the same for as long as I can remember.

Would be driving tons of traffic to yahoo, it has great SEO on all kinds of questions. If anything they should double down on it and try and attract higher quality answers. Stack exchange is showing there is a pretty big opportunity in questions and answers.