I would have mentioned that the purported Latin origin of the symbol is much closer to the English way of saying it. Some historians believe that the @ symbol f

I would have mentioned that the purported Latin origin of the symbol is much closer to the English way of saying it. Some historians believe that the @ symbol fist appeared as a contraption of the word "ad", which loosely means "towards". Scribes may have altered the word by exaggerating the upstroke of the d. So at least on twitter, "at" is pretty consistent with the original meaning of the symbol.