I've been told today that admins at a fairly junior level in MN have access to our PMs. I'm not certain whether or not it is true but as a precaution I've deleted all of mine.
Given the recent leaks with the MF FB members and the concerns about the past behaviour of certain MN staff I don't think we can be too careful.
I know that in relation to meeting up for WPUK meetings I shared my phone number and geographical whereabouts with some other MN members via PMs so I've deleted those messages as a precaution. All the MN women I met up with were lovely btw and not narcissistic psychopaths so am pretty sure they are trustworthy, MN staff on the other hand - I don't know.