@Mr_NutterButter looks like it's down, unfortunately. maybe it's moved to i2p. a lot of the dark web is going that way instead of tor because it's been subject to a really bad DDOS for the past year or so. there aren't enough nodes up to keep up with it.
there's dark fail though for a few websites: http://darkfailenbsdla5mal2mxn2uz66od5vtzd5qozslagrfzachha3f3id.onion/