Normally I don't say these kinds of stuff and I'm not here to spread FUD.
I never used this marketplace so I can't give you my opinion about it.
However, I'm a active user on DNMA and a silent reader on The Hub.
Done Deal Market is place where vendors can register for free until 15 november. Everything seems to be working fine for the customers and vendors.
However, vendors were experiencing problems while withdrawing their money from the marketplace. The admin took a lot of time to spread announcements and answer questions from several users that we're trying to register. However, the admin was not able to respond on the issue yet.
Another user on The Hub said that the design is a copy from a Latin-america website selling books (kinda ebay website, even the logo is the same.)
I haven't seen a thread about DDM on Reddit, only some posts on The Hub and DNMA, So I think it's okay to inform you guys about this.
Could be just a simple issue on the website, but until the issue is fixed, I advise you guys not to drop any BTC on the market. That's my only opinion.
EDIT! It's true. The design and the logo is the same as the latin american website named Mercado Libre. So you can be sure that this marketplace is not built from scratch.
"We're sorry, but your coins ... well ... disappeared. No, I'm sorry—there's absolutely nothing we can do. You see, it's a Done Deal...."