I very much prefer to use a newsreader to read and write messages,
rather than the ad-ridden web interface.

I managed to use the Atkins mirror to post messages to the developers
mailing list which is hosted on SourceForge. However my posts to this
group (hosted on Yahoo) never show up anywhere.

I made sure that the email address with which I've subscribed to the
Yahoo group is the same one I use in the newsreader. What else should
I check?

Thanks,

Eyal.