I don’t know if this is new or not, but I picked up a flyer yesterday at Universal Studios Florida with information on pin trading. I’ve seen pins for sale at Universal for a while now, but I’ve never seen anything about pin trading or anyone actually doing it. Looks like they are following Disney’s lead.

I found some of the rules interesting.
• Only two pins may be traded with each team member
• The pins must be: made of metal; represent a licensed Universal event, location, character, attraction or icon; and have the official pin trading copyright stamp.
• No money or gifts may be exchanged for pins.
• Name pins and lanyards may not be traded with team members.