I think it would help if there would be documentation how to use the network as a speculator/shorter. I know that I can borrow a bitasset, sell it for a high markup and buy back at a lower rate in theory, but in reality it's almost impossible to buy back at a lower price due to missing liquidity.
We need tutorials for shorters (and other market participants) in a easy to understand language how to make a profit with BitShares. I'd love to provide liquidity, but I'm not sure how.. every time I tried, I ended up with a loss.