The transaction volume is definitely amazing, especially given the fact that the blockchain doesn´t even reach 0.2% of it´s full capacity while processing more than a million transfers each day.
Though we got to admit as well that a big bunch of these transactions are most likely based on bid bots and the memos of similar services that get send automatically. It doesn´t make the number any less impressive but IMO diminishes the sensation about the actual usage at least a little bit.
Nevertheless, steem will definitely succeed in the longrun :)