Morten,
I don't really care how the posts are made, but if you aren't going
to snip the previous post, I prefer top posting as the answer is
immediatly readable without having to scroll (more reasons for this
at the bottom).
I would agree that these things boil down to simple personal preference.
There are no rules, and the
quicker you accept it, the faster you will stop being annoyed at
people not following what you consider rules. That said, there are
guidelines, and the more guidelines you follow, the more respect you
will get, but guidelines are optional. In a non public, or
semi-public, moderated forum you may enforce rules as you like, but
you may well find out that the less rules enforced, the happier the
community.
As you say, some communities offer guidelines as to how to use their
newsgroups, including rules which are enforced by the people responsible for
managing these groups. A good example of this, without going outside of the
programming community, are the guidelines Borland offer to the users of
their newsgroups here:
http://info.borland.com/newsgroups/guide.html
Borland even offers suggestions for newsgroup etiquette here:
http://info.borland.com/newsgroups/netiquette.html
which includes the following:
"Keep quoted text to a minimum. When quoting a previous post, edit out the
non-relevant parts of the message. Remove salutations and signatures. A good
rule of thumb is, there should not be more quoted text than new text.
NOTE: Under certain circumstances your message may be cancelled for quoting
style. One such circumstance is quoting a message that is subsequently
determined to be in violation of the newsgroup rules; when the message in
violation is cancelled, your message quoting it will also be cancelled.
Another special case is EXTREME over-quoting. If you post a very brief reply
to a very long message, and you quote the entire message, your message may
be cancelled. "
I think such guidelines do a very good job of reducing the signal to noise
ratio in a community. I see that Microsoft has published its own rules of
conduct, here
http://www.microsoft.com/communities/conduct/default.mspx,
but these are much less extensive than the Borland ones and as such, in my
opinion, leave the newsgroups open to more 'noise'.