No, most scams don't try to seem like scams.  Cryptoine was a small exchange that reported their volume honestly and they disappeared.

There seems to be a small group of people repeatedly opening and closing scam exchanges.  Usually they fail slowly though (Cryptsy, Mintpal, Gox...) to give the owners time to get away and to let people down gently so they are less likely to contact the FBI/Interpol.

Desci, are you in communication with the exchange owner?  Get him in here to reassure us that he's not done a runner.