FYI i'm looking at http://steemstream.com graph. at the current rate the amount of TX per minute on a slow sunday (I imagine) is 50 TX per minute which is 3000 per hour which is 72000 transactions daily. I'm sure on busy days steem must have already hit the 300K marker.
For 300K tx the needs are 10.3 operations every block (3 seconds) to reach. that is not that much.
ok, thanks for this info. So the Steem blockchain has already solved the Bitcoin blockchain's scaling errors.