I find stuff that I like, and I want to print, or want to keep a copy for myself. Some documents just aren't formatted very well for printing. Being semi-conscious of wasting paper, I end up reformatting them so I can print them off in a better fashion. Since I already do it for me, it's no harm in sharing with others. Credit (hopefully) given where credit is due on each of these.
Again, I post these as a service to myself, and hopefully have given proper credit. If you're an author and feel that I need more information about these articles, or don't want me to post something, just let me know.