“Someone was complaining about losing their Dark Shadows source recently. They got a ton of them on here.”
The site is streaming them from the Internet Archive. I’m sure they are under copyright. Sometimes people will upload stuff up the Archive and when discovered it gets taken down. I suspect that’s why at the Archive it’s titled “DS 1-100” instead of the full show title.
They still got Twilight Zone locked down pretty tight though. Only about a dozen or so. Same for the Three Stooges.