Openledger's biggest problem is the dark UI and the way prices are shown. I really don't like it when prices show 0.8 Open.Steem/USD. They should show the other way, that is 1.25USD/Steem.
I have to calculate the price everytime I put an order.
Update:
After the recent update of openledger from .info domain to .io domain, I have been having problems with transfer confirmations. The page loads properly but when I click confirm, it says an error has occured. Overall it is much better than other costly services like blocktrades.