Arbitraging is officially dead now although the site and domain are still there but they are trying to build a company called APEX out of it which allows leverage trading but while there is only leverage trading in AUSD, which was the old abot currency carried forward also known as the abot debt and their own new APEX token, not much interest will arise unless they add big trading pairs like Tether and Bitcoin. So we will see if this goes anywhere over the coming months. I would like to sell off some of my APX and AUSD at a decent price.