i came through the times of telex, if any one knows what that is (it was time on line based cost accounting, so people use ab a lot...after a while you forgot how to do formal english)
then we got into IT industry and we are used to informal stuff even more
so unless in business proposal, i just do not spend time read
what i wrote
if and when you do, you do not make as many mistakes
another thing is. only the guys/gals came out of science/engineering academic training background pay attentions to grammers a lot. till this day i am bad even at chinese grammer simply because my father said the chinese grammer is an import!