Hardly. Purists never will accept such change but that is how languages develop. Short forms in ancient Egyptian hieroglyphics eventually led to the usage of one symbol and a group of symbols used in conjunction to convey different meanings and express abstract ideas. This shortened form was frowned upon by the erudite of the Egyptian civilization too. I hate misspellings and 'lolspeak' as much as anyone else but they variations in language used by the masses lead to the evolution of language.

The parent post confuses the mutations between copying to mutations while copying. A better analogy would be that the hardware containing the 4TB of data at each stage between copies along the years has bits flipped due to hardware corruption or degeneration.

I think it has a lot to do with consciously correcting yourself when you see the little red wavy line when on IM or composing an email in FF. A lot of people get dragged into using incorrect punctuation and misspell to follow an unsaid IM and email 'protocol'. A number of my friends find it annoying when I use 'you' instead of 'u' and other abbreviated words in IM conversations (Some even complained that they thought I used a bot to auto-converse in IM).