@DejaVoo
As Cookie has kinda said, you're releasing this information (anything in your name, personal message, display picture) into the public domain - theoretically once it's out there anyone can do any thing with it - by making these things public that's the choice you have made.
I was once (from the site, with her permission) emailed by some girl in my year who had signed up to a social networking site. The email contained all her personal information, as well as a picture of her. The email was sent out to everyone on her contact list. I could be a pedo for all she knew. But it's my information to what I want with now...(if I hadn't deleted the email
)