The message
from "Phil L" contains these words:

David Hill wrote:
:: Remember if you have a lean-to greenhouse then your house wall
:: will retain some of the days heat and help to keep the night temp.
:: up a degree or so in the winter.
:: Also it will be easier to get electric into it if you want to.


Now I think I understand what happened in the 'moisture sensor' thread - you
are replying to the original poster, but tacking it onto the last post in
the thread, thereby replying in this instance, not to Susie as you intended
to, but compo.

You are mistaken, Phil. The fact that David's post appears on your
screen directly beneath Compo's does not mean that he was replying to
Compo (usenet threads don't work like that) nor does it mean he "tacked
it on the end of the thread". David can't influence the order in which
posts appear on your screen.

You probably have your newsreader set to thread posts in chronological order.

Janet