Is Fido 2 factor authentication more secure than other authentication methods like Authy or Google authenticator? It's good to know that these exchanges are using cold storage, but I find most exchanges (the ones I use) to be secure right now already. Also, regarding your message earlier about Blocktrades...How do we withdraw Steem and sell it on Binance instead of using Blocktrades to convert it to ETH or BTC? I just haven't really spent much time yet trying to figure this out yet.