It doesn't work well for those of us who don't know what you guys all look like, haha.
My group always meets at the back left corner of the dance tent, or the big light pole near the back right of the bigfoot crowd, right before a set at one of those places. It's never too crowded there so it's easy to spot folks, and then once you meet up you can move in closer.
I'm 6'7", that usually helps.
Just look for a 6'7" Aaron Eckhart looking motherfucker giving everybody lapdances.
My favourite was trying to find my sister for an entire Sasquatch and having no luck in 2011. One of the first things I see on Friday in 2012? One very familiar tiny blond hipster amongst the thousands.