YoVille will NEVER ask for your password, so please be wary of malicious emails and/or forum posts that request your password, including via web links.
I don't know how many others are having this issue (saw a couple comments complaining about the game being down on Facebook or not working properly).
I was asked if I wanted to continue accessing Yoworld on Facebook with my Facebook account , the same account I have been playing Yoworld with since I started in 2010. When I clicked through to say I wanted to continue to Yoworld, I was met with a screen on Facebook saying Yoworld is unavailable.
The game is down due to Facebook and not Yowold's end of things. People are also having same issues on other facebook games as well by saying the same message. Its not just Yoworld is being affected. We just have to wait until Facebook fixes the issues on their end. I hope this clarify things. Just hope this is fixed sooner then later!