The originator of the celebutante concept, Paris sums up this entire list as well with her catchphrase: "That's hot."
The question is not whether the thing is valuable, or useful, or intelligent, or good. The only question that matters is whether it is hot. And if it's hot, it lives. Because this is survival of the hottest, and Paris Hilton is at the top of the food chain.
Top of the food chain? That's hot.