Like I said, I basically consider the source of the error more annoying than the error itself. Articles, meh. They mark you as a foreigner but I don't think they're that frustrating for a foreigner. Word order could be annoying if it's really out of whack. Using strange words, that is, words that a native speaker would never use in that context could make an argument appear disjointed. I think one of the biggest things, in addition to articles, in terms of frequency is the use of verbs -- a lot of times, that's a marker of a foreigner, since they pick the wrong verbs/forms/constructs. But again, not that "annoying," just somewhat confusing at times.Originally Posted by gRomoZeka