A generation taught to read online will be very rarely exposed to the kind of polished prose that can teach you both style and clear thinking. Almost any book ever published has been first rewritten by its author once or a dozen times and then vetted by an editor for spelling, grammar, style, structure and contents. Just about everything on the net is first draft - this present post included.
So it is not just the atrocious apostrophes, the equally asses, the complementary compliments and their brethren that will haunt them, but a flabby race-to-the-first-post argumentative style that has no patience for intellectual rigour.
Mind, that goes for us old farts, too. Lately, I have been forcing myself off the computer and into the library to refresh my ear for language with past and present masters of the craft. Reading good literature - as opposed to paperback fantasy and such dross - is a revelation. You can see the time the author has lavished on the crafting of his/her sentences to make them both beautiful and persuasive carriers of argument.
I wish there was a way of transferring this to the internet, but, although many blogging sites allow authors to tinker with their posts, it would be futile to go through several drafts, as there are no readers to dig into bygone articles to see how they are shaping up after five months of revisions...