Elsenet, I am very deliberately not even opening a thread on "grammar mistakes that make you twitch," because I know that either I would hit things that do make me twitch, or start getting annoyed at the people who are posting there, for either defending rules that aren't, or the level of upset they get about it.

Because yes, some of this makes me twitch. That is either my issue to deal with, or a potentially relevant job skill, since sometimes people pay me to worry about punctuation, noun/verb agreement, and so on.