I'm investigating using SMEServer on my network.
I read Usenet News.
me, too.
So I compiled leafnode 2.x alpha on my SME, edited the /etc/leafnode/config file and have an excellent news server now.
advantages: I have several external news servers, but only one internal for my news client. The new news postings can be fetched in a cron job and can be read very quickly by the client, when going (locally) online.
disadvantages: leafnode scales very badly and is not suited for lots of users fetching lots of different newsgroups.
I have not done any SME panel integration, but edit the config file, when necessary.