If you read the article, it's pretty clear that it's referring to St. Louis. While I agree that it should have spelled it out in the title, I don't think it's unreasonable to expect people to click through and RTFA.
It's not spelt out whether your intent here is to berate the guy or not, but I get the distinct impression that it is. Your response is rude and uncalled for.
I read the article and it's not clear to me that STL is supposed to be equivalent to St Louis, because it isn't spelt out, and furthermore, I don't intend on looking it up in a dictionary of acronyms referring to foreign places that I may never visit, without first knowing that STL refers to a place.
