I know a little bit of everything from first-hand experiences. (Had my first computer at 13, am now 20. Have built quite a few PCs in my days as well as lots of time with wired/wireless networking a bit at work and home.) While I don't consider myself an expert, I am quite a knowledgable guy, and pick up things quick. I'm a 2nd (or 3rd? I dunno, my freshman year was all partying with no credits, I doubt I could count that as a year) Comp Sci major.
What does this mean?
A lot of people here have a good general knowledge of basic computing. A few of us have a little bit more in depth knowledge. And then you have the Intel Lithography techs (hey where are the AMD, ATI, and nVidia engineers?) who frequent the boards, who know things we only wish we knew.
Also, don't trust Nebor, or any other incompetent fanboy who rant about something they know not.