I have been working in a secondary school (11-16 year olds) for the last two weeks - just started as a special needs teaching/student assistant - and I am seeing, what I think is, a massive shift from how my age group wrote at school, only 6 or so years ago. It is no so much incorrect as lazy, illogical and confusing. For example, common phrases which cause my eyebrow to raise: "That work that I done", "ain't done nothing" (double negatives are massively common in the children's writing) "that thing he did", "the tree was like massive".
I think we are starting to see a knock on effect, wherein, students are growing accustomed to predictive text, spell checking and, above all, quick writing, and thus their formal writing is becoming lazy and a reflection of they way the speak. I understand that language is an evolving system, but I'd hate to think that something as annoying as the unwitting use of double negatives could become a part of every day language when these kids grow up and work in schools themselves.
So in some sense, yes, I see digital technology - specifically e-mail, texting and all the predictive and checking software included - killing off a part of what I considered sensible and formal communication.
P.S. In a marginally related vein, I was watching a UK TV show - 'Countdown' - the other afternoon, when a word was put forward as a correct answer. It was 'Eejit'. A variation of 'idiot', based on Irish pronunciation and spelled phonetically apparently.
It was listed in the dictionary and named a correct, English answer to a word puzzle. Is it just me, or is this a bit too much?