I POD Art, as usual. Nothing good can come from confrontation. If anything, I feel badly for these people because it seems like they are reaching out for attention. Any attention.
But I think PM'ing other member or confronting is just a bad, bad, idea. PM'ing other members will start more drama as will confronting the poster. Just ignore. When they don't get the attention they are seeking, they will move on. If it's really getting bad, contact a mod.