With Divine Love (at least for me), there is a strong physical sensation to accompany it, that feels unlike anything else. It's not anything like physical pain or pleasure, it's not like an energy center like a heart chakra, it's extremely unique. Following shortly along came some gradual but serious changes in perspective. It'd be interesting to compare "first time" Divine Love stories, but that's slightly off-topic here.
I mention that because I think that the original Padgett Messages' original intent was exactly what I ended up doing: Realizing that there was absolutely no downside to praying for the Father's Love, and giving it a shot. After all, what was the worst that could happen? Nothing?
I don't think it's a matter of responsibility rather than credibility. An anonymous person using a website, a book, or even youtube to publish a work that is coherent, consistent and possesses sound reasoning and convincing examples will have their work accepted and believed by a significant number of people. The work becomes the focus of people's support, rather than its creator, but the support is largely the same.
If spirits took care to cross-reference their messages -- that is, to ensure that their messages refer to other messages given at some previous time to another person, then despite some bumps in communication between people, we would create over years a self-referencing, coherent and consistent body of spirit messages that all carry the same theme and create within them an inherent sense of trust. Skeptics can say what they like, but it would offer strong circumstantial evidence for spirits giving messages to a medium in Europe to reference messages given to a medium in the United States, with those messages making reference to ones given in Australia... well, you get the point.
Just like the Padgett Messages, the truth of one communication could be supported by the content of another, and so on and so on until the body of messages as a whole is irrefutable by anyone who allows even slightly for the existence of spirits. I'm sure it would work.