Opening my account today, @brianoflondon, I found this:

Source: DM on PeakD's UI
So, it was nice to find this DM option seems to work quite well. When responding to what you wrote there, I did find this confusing, though:

Source: DM confirmation dialog, when sending on PeakD's UI
During my discovery phase, I thought somewhere I read that the Hive memo key is the one used for encrypting messages. Maybe I am remembering wrong.
It is also confusing to me that I do not see any transaction link for my DM reply to you, on HiveHub DEV's blockchain explorer. Before this discovery, I would have said that is not possible.
As I continue to learn and understand what Hive is all about, I welcome any insights on any of this you would care to share with me.
P.S. On your other comment:
- "At least I can upvote your comment with a pretty sizeable amount :-) and you can't turn that down. Hive is a special place because everything we do is recorded and public ..."
RE: I'm on OnebitcoinClub