Can you please explain how 'steem dollars' are a pegged currency at a 10% discount to the currency they are supposed to be pegged at? I don't get it.
BitUSD and NuBits have what I consider reasonable pegs. It remains to be seen if Nubits can keep their peg, but they are the only one I know of that had a failure and recovered.
https://steemit.com/steemit/@dantheman/boost-steem-value-by-backing-steem-dollarOkay that's pretty damned interesting.
So make that two pegged currencies that have failed, one that has recovered, and one that seems to have a proposal that might result in a recovery. But what I currently understand of steem dollars is they are a rather 'soft' peg, depending both on witnesses and relative volatility levels.
Nubits seems to have the 'hardest' peg of the distributed systems, but seems to be brittle if stressed too much. BitUSD looks to be in the middle.