It seems to me that the only people who hypercorrect are idiots who have no idea about languages other than English, or etymology. There should be something in the article that only stupid monolinguals make these stupid errors. I especially hate it when people say "He gave it to you and I" because this proves they have no idea what case is and they simply think "you and I" is more proper. This proves that they're stupid and yet think they sound educated by saying that. Anyone who hypercorrects is an idiot.