The New York Times has caught the mood:
Plinthers, as they are being called, are allotted specific slots and expected to show up on time, even if it is, say, 2 a.m. or raining. They must spend the hour alone, but are otherwise allowed to do whatever they feel like doing, within reason. They can even take their clothes off. "Nakedness is absolutely essential," Mr. Gormley said in an interview. "Nakedness is to art what the ball is to football." How about sex? "No sex up there," he decreed. "Sex after art."
Now read on. Follow that with the Guardian's comprehensive coverage and the One and Other live feed. Must get down there. Yes, I mean it.