Wow, BunBunzDad.....having a bad day?
Chase121698, pins that are traded in the parks must have the official Disney logo on the back. You can trade with CMs and other guests as long as they are willing. We had a great time doing this with my niece (age 4) on our last trip. We bought a couple of sets off of ebay at a cheap price. Remember, it doesn't matter what you buy (whether you like them or not) because the whole point is trading them off!
Let me know if you need other details.