the techs installed a much improved sniffer to weed out spammers before they can complete registration.
i check new registrations periodically to get rid of the rest.
i work on eliminating the "legacy creeps" every so often.
it's going to take a while because they built up over several years.
most of those remaining "joined" before we switched platforms.
i didn't have the tools before to detect them, let alone cull them.
it's a manual process and time consuming.
(better to proceed slowly than to risk accidentally deleting a genuine member.)
i thought i'd already found all of the Ugg-lies, but i guess i'd better keep looking. LOL
the remaining "memberships" don't interfere with anything.
as QuiltE advised, in the unlikely event you see that one of them has posted something, or sent you an unsolicited PM, just let me know. i'll be all over it like a chicken on a june bug.
as to real members who don't post, i don't think it would be appropriate to take any punitive action.
active participation by posting is up to each member.
their reasons for not posting vary among a long list of possibilities.
i just think of them as friends we have not yet met.