This post doesn't regard Katsuki, but rather her buddy Nakamura Chie.
There seems to be a fake
Twitter (Warning: terrible) and Facebook account set up using Nakamura's name. Her Wiki article also had a lot of absurd content (I just edited yesterday) w/o citations. NOT even notable voice roles, I had to add it.
From Chie's blog:
http://ameblo.jp/nakamura-chie/entry-11035497100.html (entire entry)
私はツイッターやフェイスブックは
一切やっていません(^_-)-☆
She says she doesn't do either. It has been a big bother to me, but luckily Chie made that announcement.
Katsuki-san seemed curious about it and I had to urgently tell her on Twitter, taking the risk of saying incomprehensible or/and rude Japanese, that the Twitter's a trick. I think she understood what I said (whew) .
Also, the Nakamura Twitter's using the same facebook link.
....I'd like to fight fraud by all means.
EDIT: Also,
http://www.youtube.com/user/ChieNakamuraSeiyuu