It was this bit, nanadogs: "absent you sound like you think I'm not one of the 'posters who are very well informed and extremely articulate and therefore both good and speedy at expressing their opinions.' I don't know if I should feel annoyed, patronised or amused."
You did put a grin, but I guess I didn't pick up on the humour. Sorry, but it does rather illustrate the point that it's difficult to pick up 'tone of voice' when there is no voice and no facial expression. I'm sure that If I'd been in the same room as you, I wouldn't have misunderstood you.
I think that in the same way, forthrightness (or whatever you want to call it) in print, would not come over quite the same face to face because the not unfriendly tone of voice would mellow what was being said.
I'm sorry if I have said something to upset you, nanadogs, but I was only trying to reassure you that absent meant no offence, not to criticise you for, possibly, misunderstanding her. It now seems that it was I who did all the misunderstanding. Not deliberately. I was trying to be friendly and, believe it or not, conciliatory. Just shows how easy it is (for me) to be in the wrong without any intention of being anything but straightforwardly friendly.
I'm a bit gobsmacked, actually.