First question:
From the ServerFault FAQ as of January 20, 2011 (emphasis mine):
Server Fault is for system administrators and desktop support professionals, people who manage or maintain computers in a professional capacity.
Please enunciate what you believe is a good definition of "professional capacity".
Second Question (related):
What determines if a question is asked in a "professional capacity" and deserves an answer and what should be closed and/or migrated to another site (usually SuperUser)?