I just made a terrible crypto trading mistake which actually ended up making me money, 1.05 ETH to be exact.
I read that Delta was being added on EtherDelta, so I though I'd have a look, since you can sometimes do good business there. I knew that Delta was trading around 0.0018 ETH according to coinmarketcap.
So I opened DEL/ETH and saw that someone was selling 1500 tokens for 1.5 ETH, which is at a price of 0.0010 ETH/DEL, almost half the price. I though someone must've made a mistake, so I immediately bought everything before someone else would, thinking I've made a profitable trade. Only to discover that the Delta token is DLT, not DEL. DEL is apparently a failed project, called Delphi, so these coins are virtually worthless. They're organizing a refund but only to people who acquired the tokens before the 7th of September.
However, If I can make such a stupid but rather obvious mistake, someone else can too. So I put the 1500 DEL up for sale again at 0.0017 ETH/DEL. 5 minutes later they were sold for 2.55 ETH,making me a healthy profit of 1.05 ETH. :D
So, make sure to always double-check the correct abbreviation, or you might be buying worthless Delphi coins instead of Delta coins.