To tolerate such pervasive slovenliness and error as we see in so many books and articles these days, is to invite the collapse of our entire culture, and with it civilization itself. If you can't spell, fine. If you like to scribble on a yellow pad, or dash away in Word and let the spell checker sort it out, that's writers. This is the field of the Editor. An editor's job is to make sure that no book, no article, no Web page or multimedia presentation is released to the public with typos, spelling and grammatical errors, lame typography, etc. etc.
Nobody wants to pay for proper editing anymore.
No time for even basic proofreading anymore, 'twould seem. An uncharitable mind might suspect that a publishing company that would tolerate such sloppy editing might also be tempted to cut corners in the areas of writers' salaries and research budgets. I'll wind this up with a Plea for Editors. We need Editors, more than ever before. Language is an art form, and Editors are the ones who tame the wild impulses of the artists, allowing good writing to be presented to the public.