From the changelog today.
rest in pieces
It was a good run, 1,5 years. Started as just a quickly made addition to the norbot project, and within long the site averaged 30k uniques a day, 60k on a really good day. Of course YouTube Legal became an inevitability at that point.
Special thanks to the many people who created plugins and extensions for hooktube, /g/, the five people who donated anonymously, and BitChute for working hard on a real YouTube alternative. See you in the next project.
July 16: YouTube api is back but mp4 <video> is replaced with the standard YT video embed. HookTube is now effectively just a light-weight version of youtube and useless to the 90% of you primarily concerned with denying Google data and seeing videos blocked by your governments.
It was nice while it lasted, I wish we could at least keep it as it was these last few days, still able to .mp4 download and all that. It had become my main site for videos, so I know I am pretty sad to see it go.