Nope. It had personal information I did not want 'in the clear' on it.
Has made me rethink my whole PM discussions and taking them immediately to email once/when I think I need to put personally identifiable information in communications.
If you can replicate that, you need to let us know. That means there's a problem. The mods can't read PM's, so if Google's indexing spider can, then it's something that clearly needs to be fixed.