Unfortunately, the publication of PMs is not a violation of forum rules. Therefore, when we send someone a PM, we can only hope for basic decency. I believe that the publication of PM (without consent) should be tagged.
I would like to know the opinion of the community. May be in this topic...
If in the opinion of the community it turns out that this is not a trust case, then I will remove the tag or will replace it to a neutral one.