Just noticed that Cryptonit.net refurbished their site. Their previous trading interface was hideous, but they came a long way.
I’m not related to them, I just kept an eye on them as I had my first Peercoins from them.
Might become a returning customer if they get some more trading traffic. It is very quiet there right now.
Here is the link to the announcement:
Edit: And they announced to have a trading Android app. That would be the first I know off which would support PPC trading.