No, this should not be allowed. In general I believe people should manage their own issues without involving PCF moderators or the entirety of the forum; however, I also feel it is important to discuss this topic impartially. The most relevant analogy to this situation is recording a telephone call. US Federal law permits the recording of a call if one of the parties consents to the recording, and such a recording is fully admissible in an actual trial. That said, providing a recording of such a private conversation to a person that was not legally present (e.g., able to overhear the conversation above the noise in the room), such as the entirety of the PCF forum, is likely an illegal act and opens a completely different can of worms. All of PCF should be governed by the Terms of Service, and the general expectation to not behave like a four year old should fully apply even in PMs. PMs have a report function for just such ToS abuse. Other than that, your PMs should come with some expectation of privacy, as PCF isn't a formal trial and bringing in a third party to a private recording is likely a no-no. The rules governing use of such a recording vary by country and even by state (in the US). The simplest solution that is least likely to cause issues is to not allow the posting of PMs on PCF.