I hear it is run by criminals.
Not much more than that really.
FUD
The MK story was unfortunate for everyone. That said, the fall of Gox was only unexpected for the most gullible IMHO.
Anyway, MK is no longer part of the Bitcoin Foundation (and hasn't been proven a criminal yet either AFAIK)
And may I remind that Gavin Andersen, lead of the core devs, is employed and paid by the Bitcoin Foundation. Just saying.
Everyone can join the Bitcoin Foundation for a yearly fee that is currently about $30, if I'm not mistaken. It won't get you any superpowers, but you get access to a non-anonymous forum and get voting rights too.
Full disclaimer: I am a member of the Bitcoin Foundation