In looking into a [StackFlair](http://stackflair.com) issue, I have discovered that MSO is not being returned as part of a user's associated accounts.  Please see my [associated accounts](http://stackauth.com/1.0/users/3f0eac82-1801-410d-b334-234c18ddeeeb/associated) according to the api.  Note that there is no mention of a MSO account, however I clearly have [one](http://meta.stackoverflow.com/users/140548/rchern).