As just one example, suffice to say that I became really frustrated that the intern seems to think that every two-letter word beginning with 'i' is a preposition & thus not to be capitalized (is, if, it).
Which puts the intern in line with 90% of Americans.
Paste magazine commits this error all the time; it's the most poorly copy edited magazine I've ever seen. Apparently they think no one cares. And they might be right.