I have to admit, while not the most stirring display of protest I have ever seen, this is rather amusing. Some folks from the Zul'jin server, who are fed up with lag and crashes, took their complaints directly to Blizzard. They didn't march on Blizzard headquarters, but they did make their voices heard by picketing the World of Warcraft booth at Gencon 2006.
While some might argue the merit of spending your time at Gencon holding up signs and making what looks like a (very polite) ruckus, I award them points for creativity. It sure beats starting yet another "fix the server already" petition on the forums.