Articles like this really bug me. As the American said who wrote in on the article itself, language is fluid, dynamic, and changing. Being offended by changes the English language took in America over the last 300 or so years seems like a pointless endeavor. I could watch nothing but British tele and movies 24/7 (ha!) and not pick up things like "ta", "brekkie", and "cuppa", which I find, especially the latter two, to be totally ridiculous. The people who say they're picking up American words and slangs and they've never been to the US are picking it up from our TV and movies.
Sigh, I'm trying to make an intelligent point, but this just aggravated me. I agree with previous posters, a lot of this is bad grammar that annoys us just as much.