Not only by the English, but by everyone else who speaks it.
Okay, let me come cleanly out of the language closet here: I have no problem lapsing into faux Hollywood when speaking to particular individuals - as long as they are not much younger than I am (which probably rules out most of the people I know) at which age they would be reduced to helpless laughter. But, I really do think that colloquial and written language should be kept separate.
On the internet, in personal letters, in the press, in any form of public display (including advertising), I think that the correct forms of expression should always be used. This is not just to make me happy personally; it is very much part of an ongoing education from which all of us can benefit. How can a teacher correct a child when that same child sees incredibly poor grammar flashed across the television screen night after night, when those awful banners flash across the bottom of Sky News, for example (and yes, even the BBC news), with appalling use of language now the norm? Advertising commercials seem to be particularly prone to wilful desecration of English.
Such things are not evolutionary change since there is no need for them as the correct words already exist; they are language vandalism.
For pet hates: misuse of to, too and two. How in hell can that challenge anybody´s capability?
Rob C