It does annoy me when people do this stuff. It’s not grammar nazi-ism, it’s just basic English. When I see people using improper words, I automatically assume I’m going to have to correct them on other things as well. Like facts. If you’re incapable of speaking/writing correctly, why would I think that you’re capable of doing anything else correctly?
The worst is professional emails (my boss has had several issues in his), or articles from news sources. More than half of the articles I read have some mistake/error in them. I can understand one every now and then, a mistype or something, but the sheer volume of problems shows either retarded authors, and a lack of editors. Or editors that don’t care, in which case I don;t know why any reputable publication would employ them.
BTTT!