from last years Peep Fest website
Here lots of great pics from last year also
“Okay, language lesson: "Peep" is short for "people" and the term has been around as slang long before this forum came into existence. Forum "peeps" are therefore the folks who spend time here on this forum. When the folks who spend time on this forum are in Playa at the same time, they have a get-together/ meeting/ what-have-you (a peep meet) in order to put real life to this little virtual community James has created here. When a whole big a$$ group of them plan to come here for the sole purpose of a week-long get-together (among other diversions, I'm sure), THAT is a Peep Fest. Lesson over.”
Susita in Q Roo