I have tried this as well, with other Utube postings. Sometimes, I just want to show the Utube member and other commentors a photo I have posted on TBN that directly addresses their issue. I mention "TractorByNet" without the ".com" in case URLs are blocked.
The guy, Cam, of TheGarageConnection on Utube has responded to a few of my comments, but has not joined TBN as far as I can tell. He does seem to be a FB user, but that site requires an acct to even see postings. Too bad, since he has a lot of followers and has done a good job. I want to support him, even if he has a commercial interest.