Let me have a go at the current rules of:
In: computer hardware, computer software, or personal and home computer networking.
Out: electronic devices, media players, cell phones or smart phones or game consoles, except insofar as they interface with your computer.
I would suggest something like:
In: Computer technology and computer hardware, software, networking and auxiliary devices, for the purpose of improving understanding, usage, or just making things work.
Out: Special-purpose electronic devices such as media players, phones and game consoles, except when networked to computers or running a general-purpose operating system (such as routers or Embedded Windows).
Note: Judging by the number of upvotes on the post, I'm not the only one that finds the rules somewhat confusing. This is just a first try that I'm putting up. I'm not asking here for a vote on including it in the help, as that's for the moderators, so there is no point in downvoting. Criticism or suggestions would help. It's very difficult to phrase a rule that is both general and precise at the same time.