Weird. Didn't delete any comments, there's just one reply. In the notifications looks like there was another comment, but it doesn't show up.
Here's a thread about Youtube deleting comments containing links, including Bitcointalk references:
https://bitcointalk.org/index.php?topic=5365512We should test that out.
I've definitely had comments containing links disappear, including links to YouTube. I'm not sure if they are deleted or in some kind of limbo that an algorithm or the channel owner would eventually be able to release them from. It's gotten so that I'll write a comment, describe how to find the content I'm linking to then add the actual link in a followup comment.