I know the website is still available, along with some good information. I don't know if the OldsGmail list itself is still going. I haven't subscribed in a long time. I think Doug Newman's been keeping up with updating the site with seasonal themes and such.
I just realized that was formed over 20+ years ago! I recall the Oldsmobile mailing list and we sorta just ventured out on our own because at the time, G-body discussions were a small, but growing, splinter group of the OML, and the amount of emails was tremendous when co-mingled. It made sense at the time. I know some folks here wouldn't have a clue about a mailing list, but it was a crude beginning of what we know of as forums now. It was commonplace in the mid 90s.