[arp242]

But it's trivial to just put something on these domains like Wikipedia picture of the day or whatnot, and who's to say that's not "valid"? It's just that no one bothers now because they don't need to.

In principle I agree, but I don't really see how it can be solved in a practical way without a lot of collateral damage.

[joe5150]

Lots of domains don't necessarily point to anything as obvious as a website for perfectly normal reasons, either.