Steemit's internal market is maturing quickly. At the time of writing this article, Steemit's internal Steem to Steem Dollar had;
24hrs Volume: $786,339 (Steem Dollars, which are currently trading a premium to the USD)
Spread = 0.023% (I appreciate usually wider, but still it has narrowed significantly since the 4th July)
https://steemit.com/steem/@dan/steemit-s-evil-plan-for-cryptocurrency-world-domination
The key for the development of the founders concept is Steem and Steem Dollar Circulation, and the growth in the internal market shows strong signs that this objective can be achieved. Very impressive growth, alongside an additional 1200+ accounts signed up in the last week
Edit: made a great call on a post below. Because Steem and Steem Dollor are free to trade, and liquidity rewards are being offered, traders are filling their own orders in order to do volume. It's more than possible a majority of that volume is not reflective of the Steem and Steem Dollar that is actually changing hands.
That being said, it's tightening the spread, and the volume on the bid/offer is there to be traded with. Some of these traders will take a hit engaging in such actions. Believe me, I'm an oil trader and I've seen it happen in financial markets.