I joined that site about a week ago. I haven't done any trading on it, but was advised by Palm Beach Confidential to join because it may be necessary to buy certain coins that aren't traded elsewhere. I don't like Kraken and am starting to really dislike Bittrex, so it may be a good alternative option. Good advice about writing down the backup codes. I recently bought a new phone and had to manually transfer the codes to the new phone. Fortunately I still had my old phone but it was still a pain.