Its called camping and if they did it in a corner well then thats there first mistake. True campers like to look down on their prey not cower in a corner, u will have to fight sometime. Anyway force seeing and spectators would make it pretty impossible for alot of u guys too camp. And if not everyone usually teamkills the camper which too can be immensely enjoyable.
*Mind Trick* it is a great idea, spread the word