With the changes made to the policies recently, and the amount of hits Super User is taking at the moment, I would like to suggest that the current FAQ is updated as follows:
Super User is for computer enthusiasts and power users. If you have a question about ...
- computer hardware
- computer software
… and it is not about
- videogames or consoles
- websites or web services like facebook, twitter and wordpress
- cellphones or mobile devices excluding iPhones
- electronic devices or media players
then you're in the right place to ask your question!
I don't believe it should be a big list but these are the common one's that seems to cause tension during the closing of questions. It's useful to just direct people to the FAQ rather then having to type a comment every time.