Not a scam.. just new, not many users, not many orders on the books, not many trades.  It's hard building a market from scratch.. it's sort of like building a social network from scratch.. who wants to come to a party nobody is at?  We're in discussions with some market makers now who can help with the liquidity problem.  We didn't expect to have much traction without a market, which is why we haven't put much in to marketing the service yet, but launching without the market has given us a good opportunity to make sure everything is working as it should in production before we take on a ton of users.

Official announcement thread here:  https://bitcointalk.org/index.php?topic=290799.0