My final comment is to ask why people send Dan PMs rather than posting to All?
I don't know, so only can speculate; probably for the same reason they PM each other. It has been a "feature" of my 14+ years as Forum Admin here and on other Fora I've administered. While it takes some extra time, I've found the direct interaction enjoyable when it occurred. I've always figured if someone contacts me by PM, it implies a certain level of anonymity or confidence, so I respect that if I reference it at all. I views PMs as a "Hey Dan" rather than "Hey All".
Some are friends of mine off-Forum as well who do this to ask my thoughts or share theirs directly. I would
guess some are shy to post publicly or don't know how their ideas will be received. Sometimes they simply want to flag something for "Admin attention"/community good, a tech issue like posting photos, or a personal question about bike setup or advice. I've had to limit those last two, as at peak I was spending upwards of 35 hours/week gratis on direct correspondence, particulalry related to individual frame sizing/fitting questions for used Thorns before and after purchase. It has been an unpaid labor of love for me, but I do have other things so I'm a bit reluctant to take on extra projects.
Quite apart from this, when there are rare problems/complaints with Reported Posts or a member violating Guidelines (
https://thorncyclesforum.co.uk/index.php?topic=26.0 ), I do my best to handle it off-Forum by PM. Sometimes people are having a bad day or misread something wrt intent, a limitation of text-based communication or a too hasty press of the SEND key.
Apart from that, there's the usual behind-scenes Admin tasks to keep a Forum running smoothly, to clear out spam, register new members, recover passwords, etc. In the course of those related PMs, people will use the opportunity to drop a comment or two on something topical without making a formal post.
Best, Dan.