As you're reviewing your votes you might find my tool helpful.
As you'll see, @justinadams recently shutdown his witness and there's another account that is down, but I'm not seeing an explanation in their blog.
It's good to do a review of our witness votes, but as you see it takes a little work to get a good view of the status of a witness account.
thank you. Updating now. sorry to hear that @justinadams shut down, he had a really good set up, way more that most of the top 50, and he never got a look in. Ah well. I will adjust my votes.