Recently there has been a rash of bogus boards and pins being set up without people’s knowledge and although it appears harmless, it is annoying! You will get notifications that people are repinning your pin (emails for each one if your settings are set up that way) and it appears to be associated with accounts which are connected to Facebook either through “Log in with Facebook” or having allowed Facebook to access your Pinterest account. Because of this, and therefore possible access to your personal information on Facebook, I’d suggest disconnecting them. I haven’t been able to find out too much about this, or what else it does, but made this video about how to adjust your settings to protect yourself if you’ve been hacked. Let us know in the comments below if you’ve experienced this or come up with any other solutions!
UPDATE: Some things have changed since I made this video. Find your account settings under the More tab at the top, or at this link directly. Also the Log In With… has changed – it is now a yes or no toggle, and there is one for Google+, Gmail, and Yahoo in addition to FB and Twitter. On Facebook the Apps privacy settings are now here.