as a practical currency out there where the transactions are that buy stuff.
Also for this to happen Steem will need a mobile wallet app or something like that ... as far as I know it is coming now, they talked about it at SteemFest 2. When the app is online then, I imagine, they will start promoting Steem. But before, without a wallet app, how will be a practical currency? ;)
How about a payment plug-in for the websites of on-line retailers? Seems like a good place to spend some development time.
Also a good idea to do for sure @ocrdu :) Everything that facilitate payments and movility is always welcome for a monetary system