There happen to be a little difference between an exchange platform that don't function anymore and one that has been abandoned. This is because the both of them don't seem to be useful to Traders anymore. The major difference is the fact that one that doesn't function anymore don't have anything to do with its website anymore while the one that has been abandoned just happen to leave its website without an update.
The exchange platform I would be reviewing happens to be an abandoned project and is known as the DRGx exchange platform. Their User interface displays the fact that the project has been abandoned and just like any trader would do to an exchange platform, I feel they should do same with this exchange platform (I'm talking about avoiding it here).