In article <191020171832476638%cad@bounders.club>, cad@bounders.club
says...
>
> In article <4fohuclkuvmu9urtgjt3rgvje8aildb8n1@4ax.com>,
> <Moxy@127.0.0.1> wrote:
>
> > My understanding that cross posting was considered evil for two
> > reasons;
> >
> > 1. Users would end up downloading the same article multiple times
> > unnecessarily sucking up valuable bandwith on the server and on
> > expensive analogue dial up lines.
> >
> > 2. Storage, this was once a vastly expensive resource.
>
> Sorry, but that's backward. You're thinking of multiposting.
> A crossposted article exists only once in the disk storage of each
> server, regardless of how many groups it's crossposted to. And a good
> newsreader, one that is well designed, will keep track of crossposts
> and let you (sometimes as an option that you can switch on or off)
> automatically filter out second and subsequent copies so that you only
> see one copy even if you read all of the groups it's crossposted to.
>
> A crossposted article has a Newsgroups header that looks like this:
>
> Newsgroups: group1,group2,group3
>
> On the server, all of those three groups have pointers to a *single*
> shared copy of the article on disk.
>
> A multiposted article (or "articles" plural, actually) exists as a
> number of separate copies on disk, with Newsgroups headers that look
> like this:
>
> Newsgroups: group1 [only in copy #1]
> Newsgroups: group2 [only in copy #2]
> Newsgroups: group3 [only in copy #3]
>
> One reason (completely unrelated to the above) why crossposts have been
> considered evil in a lot of groups is that they attract unwanted
> attention from outside the group. If group1 is not well known and its
> participants like it that way, flying under the radar, then adding
> group2 and group3 to a distribution list along with group1 will
> implicitly invite participants in those other two groups to learn that
> group1 exists, read it, and possibly interfere or troll or spam or
> whatever. Most often, the motive for trying to fly under the radar is
> to avoid having spambots automatically add the group name to their
> lists of groups to spew crap to.
>
> HTH.
That is a much more useful and ionformative reply than mine, which was
to say "Crosspost away!" Many thanks. :)
NB
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