Here is an interesting overview on startup Plastic Jungle, which is trying to make the gift card business more liquid through the Internet.  The question is, though, does the gift card business have enough potential for this to work?  Plastic Jungle is not the only company trying to do something like this with gift cards.  StartUp Beat featured company Friendgiftr also sees potential in gift cards: via TechCrunch Can Plastic Jungle Create A Market Around Gift Cards?