I hope RAT stays an open forum

[sonic]

for obvious reasons I can’t always say where it comes from, even privately.

Why obvious reasons?

But if you really can't give that information, you should not have discussed the piece to begin with.

What obvious reasons? If the reasons are obvious, why can't we be told?

I must agree with VS: if you can't verify the provenance of your material, it is unfair to ask everyone for information. It's all a matter of trust, and unfortunately, with the diverse origins of the posters, that has to be earned. I still wonder why you haven't explained - in confidence - to one of the moderators why you can't reveal your source. If one of them was to support your claim that the source can't be revealed for good reason, others would trust you more.