I read a comment just like this a couple of months ago. Someone saying that until this point they thought Richard Stallman was a complete paranoid nutjob but it turns out he was completely correct. I guess that's why he will be seen as a visionary in so many areas.
And speaking of stallman and airgaps: http://stallman.org/stallman-computing.html
> I generally do not connect to web sites from my own machine, aside from a few sites I have some special relationship with. I fetch web pages from other sites by sending mail to a program (see git://git.gnu.org/womb/hacks.git) that fetches them, much like wget, and then mails them back to me. Then I look at them using a web browser, unless it is easy to see the text in the HTML page directly. I usually try lynx first, then a graphical browser if the page needs it.