I always use a separate wallet when I am trying to trade in Etherdelta or Forkdelta just for being cautious. I know that it is safe to use these sites but then we don't know what if something will happen that would compromise these sites so I just want to be safe. There are gem coins in these sites as most of the time, the ERC-20 tokens are first listed here. I always use bookmark too when accessing these sites because there are many phishing sites.