Originally Posted by Julian.
Putting it on her official website is like the basic "mandatory" thing to do to make sure people know it's her official one
(I know it's verified at Twitter but still).
Absolutely agree, I was already surprised when she arrived on Twitter that her website didn't have a link to it... it still hasn't.
But for the Facebook side, there's this https://www.facebook.com/Sharapova/app_53267368995
on her main page, but I guess people only read her posts so it goes unnoticed.