I am going to beg to differ on this one.
While hoax.es is the best one of the bunch, I don't see value in any of them. I don't think hoaxes.com is a valuable domain, let alone a matching hack.
The end user niche is very, very narrow; only scam awarenesses (or such) sites and they have better alternatives.
The other ones I think have no value because they are two worders. One word hack? Absolutely. Two word emd hacks? Nah. They don't have any established value.
So i'm going to say these domains don't have value.