I posted on my own wall last night and lots of people have commented. In the post I tagged two friends, both of whom have responded. I've just seen that a friend of one on these friends has also commented. I have no idea who she is and I really don't like that she's been able to see my status. My privacy settings are as tight as they can be as far as I know.
Has she been able to see it because I tagged our mutual friend or because the mutual friend commented? And does this now mean that all her friends will see it because she's joined the conversation that has fuck all to do with her ?