I have not seen pins like that. I would for sure take that off if I repinned it. One thing that bugs me on Pinterest is when people put personal things on the pin and then I forget to remove it when I repin it. Like someone says, "This would be perfect for my wedding." Nope I am not planning a wedding, just forgot to rewrite the pin. LOL
My Pinterest account was hacked into recently, someone was posting all kind of business opportunities and I hated that! Pinterest even locked me out of the account due to the suspicious activity. They knew it wasn't me doing it, so they locked the account to get whoever was in it off. Then I just had to make a new password when they unlocked it.