I can vouch for 0daycoins.com, since i helped developing it.
We have just added SSL and more info on the index page.
New coins and more cool stuff will be added soon.
If anyone got any question or problem you can message me here directly or on freenode(dima1236) and i try to help/pass it forward to the owners.
P.S.
The website design is a temporary a new one is on its way, so please don't hate us for that
It does work. I already made one successful trade and withdrawal but I would suggest one thing.
Maybe you should put a notice in "Buy/Sell" page about minimum Withdrawal and Minimum coins needed for putting an offer. I sold 1000 Coyes for LTC and now I'm unable to either withdraw those tiny LTC amounts or sell them back for Coye since the minimum amount is set to 0.01. This value only shows when the withdrawal/offer fails.
I know these are small amounts but for beginners with not much computing power it is frustrating. Now my coins are stuck on the site.
Otherwise it is a nice site that is simple to use.