Maria Sharapova, who has over seven million fans on Facebook, says she doesn’t use Twitter because her everyday life isn't very exciting.

"I think it's too much for me. I mean, I'm bored with myself on a daily basis, and I think if I'm bored, like eating a bowl of pasta, I don't need to let the world know that I'm at this restaurant eating a bowl of pasta," she said. "That's my opinion about it now. Maybe that can change, but it’s just too much every day to tweet and to write. I write enough texts a day. I can't even imagine what it would be like if I would tweet constantly. I'm getting arthritis in my thumbs. I already text so much, it's embarrassing."