Sis and I have been collecting for a while, but only got to actually trade this past December. Visiting Gramma in FLA, we got to spend a couple of hours trading Disney Springs. Loved it so much that last month, we went back to visit Gramma, and spent several days trading at Disney Springs! We collect and trade for pins purely for the design on the front! Size, edition number, place of origin, etc. is of little concern, as long as we like the look of the front of the pin! Actually, I even traded for a few pins (from Disney employees, no less!) that turned out to be unauthorized! However, I have them on my board because I like them. -grin- So, we buy and trade for pins we like. Sis collects Beauty & the Beast pins, anything Hawaii, and Minnie Mouse pins, with some others thrown in (like Tsum Tsums). I am a bit more eclectic, but really like the submarine "Nautilus", Gus the Mouse, Robin Hood, and Kevin the bird (from Up). Right now, we just discovered "UP" and are trying to get a few pins. I also like animals, cats, Tsum Tsums, Epcot pins, DCL pins, the new Disney Duos HM pins, etc. We collect Chip and Dale together. Being identical twins, this is what we actually started with. Sis gets Dale, I get Chip, and we share the pins that have them both on it!