Is there a Trading Card Site where you can actually trade?

I've have always been a fan of trading cards online and off (I don't know why). I have many different types of collections; some complete, some incomplete, and some with tons of multiples. Is there a site where people can list the cards they need or want to trade? I hoping to find one with a lot of different types of collections. Also if you know of any online trading site with virtual cards please let me know. TY

Is there a Trading Card Site where you can actually trade?
I was wondering about the same question before and i search every where and i can't find a site that can trade card with other people, so i dont think you can trade cards. Hope this help.