Nice article, especially the point 1, where you point the wrong things I do.
Anyway, since you asked, no problem with pdfs, as long as you dont clutter it with tons of images and it goes like a 10mb pdf, 'cause (at least for me), Firefox freezes while downloading/trying to show the pdf.
Nice article in pdf format for future reference, saved it somewhere on my disk. Layout is clean, just like code should be and after that do some optimizations with good comments. Actually the article and code have some thing in common like the previous thing I mentioned and the fact that including pictures and maintaining a good layout is difficult. Publishing articles in ebook format would probably be best, reflowing text with pictures on the right spot
Copy and paste indeed is a nifty method for creating unwanted features in your code.