I always look at others DIS photos here to see if we are in them, isn't that a riot? I have feeling one day it will happen....
If you want to be "recognized" as a DIS-er, please do something other than "just wearing a lime green Tshirt". Tons and TONS of folks wear lime green because it is easy to see and keep track of each other in the crowd. If you want to be recognized, make sure to wear something that says DIS on it, or has some reference to it. A lime green Home Depot mickey head screams DISboards, as does a lime green ribbon--though it must not be worn as a hair ribbon unless it says DIS on it.
It's especially nice if it's something that can easily be seen from a distance, like walking by in a crowd. One of the best ones I saw was a big, loopy, currly mass of lime green ribbon hanging on someone's pin lanyard. I spotted her 25 yards away, and I knew there was no "fashion" reason to be wearing that ribbon, lol.
I have spotted members wearing official DIS merchandise--the lime green fanny pack on one, and last October I saw a whole family wearing official DISboards tshirts (grey ones, but with a large logo). Unfortunately the family was hustling in the opposite direction from me and I wasn't able to stop them before they disappeared. I tried to take a photo of them so I could post it here and see who it was! LOL Who was in Tomorrowland with a small group in grey DIS shirts last October?

I also met someone wearing a Home Depot mickey head on her fannypack that trip while we were meeting characters in Toontown. Can't recall her name, but she said I was the only DIS person she had run into so far. Oh, and I never have anything lime green on since I don't carry a purse or pack, don't have a stroller or lanyard or anything to put it on. I see girls with lime green ribbons on their ponytails but I never ask them about it--I wouldn't assume lime green meant DISboards unless it said it on it.....because, yes, people look at you like you have two heads if they aren't DISers and you ask them about it. There is just no good, easy way to describe it without sounding like a big dork.

"Oh, I thought you might be someone I don't know and never met that just might frequent the same website I do".