Is Yahoo's Search engine still worth ranking on?

Yahoo is a search engine I used to use quite frequently and despite it still being around, I barely hear anything about it and it was only because I looked into it that I knew it was still around.

Would you say that Yahoo's search engine is still worth ranking on when it comes to your websites? Do you aim to get your websites ranked on Yahoo or are you not too bothered?

I believe that if your website happens to rank on Google search engine, there's also a very good chance of it ranking on Yahoo search engine vice versa.