Hello,
I took a break from trading altcoins, last time i was trading altcoins i used websites like mintpal polonex cryptsy.
I want to invest and trade altcoins again. What are the websites you guys currently use for trading altcoins?
The new kids on the blocks are Yobit,Novaexchange and Alcurex you can also list Ccex,it's not yet on your list,each one has their own features and level of security so my advice is to check one of them that you feel comfortable trading.