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.
It depends on the items.. one must just try putting it there some will stay and some will not. However one is able to put a rug on the edge and stretch out the floor...put up wall extensions.. you just keep trying...to see what will work
I am not sure how to do this but there is a girl named Bliss and she makes YouTube videos related to YoWorld and she said one of her next videos will be how to cover up black spaces. heres a link to her channel. https://www.youtube.com/user/NeinDasIstComfy