Ah well. It's always a gamble when you do that stuff - I was still learning about copyright law about a decade ago and had been putting up first issues to comics I was reviewing as a 'now get into the comic!' thing, and the creator of one of the comics came in panic and asked me to take them down and also linked me to where I could link to legal sample copies.
I mean, I thought I was doing a good thing but that poor freaked out author made me look more into it. At the time I felt kind of resentful, even though he'd actually been nice about it. But I'd also had a bunch of old pony episodes on my webserver that I realized maybe shouldn't be there, so I think he may have saved my website account by making me realize I should delete my majorly not mine stuff.
That said, the person who had all of Moondreamers on Youtube is a saint. And I would have adored you if I didn't have my own copy of Rescue at Midnight Castle.