As of May 2nd a completely new set of rules went into effect that dramatically improved the quality of CM lanyards. Some are from the rules before but the top 5 rules are different and/or new:
The general rule on what constitutes a tradable pin is that it is a cloisonne, semi-cloisonne or hard-enamel metal Disney pin, or an acceptable operating participant pin, that represents a specific Disney event, place or location, character or icon.
Only participating pins that show a Disney, Disneyland Resort or Walt Disney World Resort affiliation will be accepted for trading.
Disney Service pins, Spirit of Disneyland Resort pins and Disney language pins will not be accepted for trading.
Counterfeit pins and lower quality pins (e.g., plastic pins, rubber pins, other non-metal pins, epoxy-coated pins, etc.) will not be accepted for trading.
If there is any doubt as to whether a pin is tradable pursuant to these rules, the trading Cast Member shall make the final determination.
Pins should be in good, undamaged, tradable condition.
Trade one pin at a time, hand to hand.
For safety, trade pins with the backs attached.
Please refrain from touching another person's pins or lanyard. If you need a closer look, ask the person wearing the lanyard if they can bring it into clearer view for you.
Certain pin sets must be traded as sets. If a single pin from the set does not complete the intended picture or statement alone, such as carded pin sets, all pins in the set must be traded as one pin.
"Name pins" may not be traded with Cast Members. This includes Disney name pins.
When trading with Cast Members, Guests should offer a pin that is not already displayed on the Cast Member's lanyard.
Monies or gifts may not be exchanged or used in trade for a pin.
Guests may only trade one pin of the same style with a Cast Member.
Above all ... Have fun!! Pin Trading can be a great way to interact with and meet Cast Members and their Guests.