I'm also a bit dubious about the three trading mechanisms presented to a new user. When you press "Convert to Steem" you'd assume it'd go at market rate. It actually goes around 1 = 1, meaning you're doing a cut price sale on your conversion.
Click Buy or Sell, and you're presented with Blocktrades. Click Market and you're presented with the currently best but also most baffling trading mechanism.
It's not that hot for the new user, like myself, and nothing really presents itself in terms of education. Only by poking around and asking questions can you get an answer. These answers should really be in tool, flagging visibly.