Two parts: User registration and management, FinacialAdministration included.

User property registration and management. Thinks like [Ad] drafting, publisher->property [Tag] management.

Document -or- specify how Users have things to enter/provide to Your system

No filespec given

User(GUID)->properties[]->tags[]
User(GUID)->ads[]->tags[]

Login(User(GUID)->publicKey) = PassKey